All rights reserved. The skin and its accessory structures make up the integumentary system, which provides the body with overall protection. Write terms for selected stru ctures of the integumentary system or match them with their descriptions. 3. The skin is made of multiple layers of cells and tissues, which are held to underlying structures by connective tissue (Figure 4.1). The epidermis has no blood supply and it is nourished by diffused oxygen from surrounding air. The Integumentary system: Is an organ system consisting of skin and it's associated structures. They consist of compacted and layered keratin-filled squames (scales). There is a perfect match between the nail bed and plate, forming a seal, which prevents microbial invasion and debris collection. If you look in the mirror you see it, if you look anywhere on your body you see and if you look around you in the outside world, you see it. Match the skin structure to its tissue type: Subcutaneous. Cartilage. Dermis: F & I 5. It is an effective barrier against potential pathogens and protects against mechanical, chemical, osmotic, thermal and ultraviolet radiation damage (through melanin). The Nervous System and Nervous Tissue Chapter 13: Anatomy of the Nervous System ... Joint Structure / Articulations They are located in the subcutaneous tissue overlying the pectoralis major and minor muscles. It does not contain blood vessels. These cells are grouped together in lobules separated by connective tissue. The skin has an important job of protecting the body and acts as the body's first line of defense against infection, temperature change, and other challenges to homeostasis. It is an extensive sensory organ, which forms an outer, protective coat around the entire external surface of the body. Copyright © Are you struggling with all the parts of the integumentary system? Bromhidrosis is a condition characterized by an unpleasant body odour. The growth, rest and shedding of hair follicles occurs in cyclical stages of variable duration. In structure, it consists of a keratinized stratified squamous epithelium; four types of cells: keratinocytes, melanocytes, Merkel cells, and Langerhans cells. The skin and its accessory structures make up the integumentary system, which provides the body with overall protection. It originates from the nail matrices, found at the base of the nails. Sweat glands are small, tubular structures located in the skin. Simple Cuboidal Epithelial C. Simple Columnar Epithelial 7. During the resting (telogen) phase, the hair follicles lie dormant. The nail plate is completely free distally to the onychodermal band (distal margin of the nail bed). This type of cell produces the pigments which give skin its color: _____. The integumentary system is composed of skin and its appendages, subcutaneous tissue, deep fascia, mucocutaneous junctions, and breasts. View Integumentary System Review Worksheet ... _____ Match the skin structure to its tissue type using the box right. An overwhelming amount of keratin can cause disease by giving rise to eruptions from the skin that will protrude outwards and lead to infection. The deeper layer … 1. The distal margin of the nail bed is called the onychodermal band. They include distal subungual, proximal subungual, white superficial and candidal. The integumentary system comprises the skin and its appendages acting to protect the body from various kinds of damage, such as loss of water or damages from outside. This hair type is most easily observed on children and adult women and is colloquially known as “peach fuzz”. The integumentary system includes hair, scales, feathers, hooves, and nails. Nerves in the Integumentary System By Janet Rae-Dupree, Pat DuPree Skin is jam-packed with components; it has been estimated that every square inch of skin contains 15 feet of blood vessels, 4 yards of nerves, 650 sweat glands, 100 oil glands, 1,500 sensory receptors, and more than 3 million cells with an average life span of 26 days that are constantly being replaced. Areolar connective tissue, dense irregular connective tissue. The skeletal system consists of: B. ones . Non-keratinized cells allow water to "stay" atop the structure. There are four basic tissue types defined by their morphology and function: epithelial tissue, connective tissue, muscle tissue, and nervous tissue. • The epidermis contains melanocytes and gives color to the skin. Write the names of the diagnostic terms and pathologies Terminal hairs are longer, thicker and more heavily pigmented. The epidermis is the outermost layer, providing the initial barrier to the external environment. The nail bed consists of two layers: the epidermis and dermis. 2. The dermal hair papilla is a cluster of mesenchymal cells giving rise to several capillaries, which form a capillary loop. Also, the stratum corneum is the top part of the epidermis. Lab 3: Integumentary System Search this Guide Search. They are long, unbranched, tubular structures with a highly coiled secretory portion situated deep in the dermis. The hypodermis acts as an energy reserve. Match the skin structure to its tissue type. 2021 Skin: Tissue creating an external covering of the body. Also, choices may be used once, more than once, or not at all: A. The epidermis is the topmost layer of skin that can touch, see and feel. Reviewer: The skin is made of multiple layers of cells and tissues, which are held to underlying structures by connective tissue (Figure 5.1.1). The integumentary system has multiple roles in maintaining the body's equilibrium. ... Four Types of Tissues . Beneath this, the dermis comprises two sections, the papillary and reticular layers, and contains connective tissues, vessels, glands, follicles, hair roots, sensory nerve endings, and muscular tissue. The integumentary system is made up of skin, glands, hair, and nails, and it functions primarily to protect and insulate the body. Adrian Rad BSc (Hons) Each word is used twice. Sebaceous glands secrete sebum, which is an oily and fatty secretion. It increases the mobility of the skin, it thermally insulates the body, acts as a shock absorber and is a source of energy. It has a thickness between 1.5 and 5 mm, depending on location. Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster. Vellus hairs do not project beyond their follicles in some of the areas, however, they are short and narrow and cover most of the surface of the body. It is histopathologically characterized by telogenic (dormant) hair follicles and infiltrating inflammatory lymphocytes. Its main functions are protection, absorption of nutrients, and homeostasis. 2. It is due to the biotransformation of odourless natural secretions, such as sweat, into volatile odorous molecules. This gas exchange system, where gases simply diffuse into and out of the interstitial fluid, is called integumentary exchange. The commonly affected parts are the nail bed (distal subungual) and nail plate (proximal subungual, white superficial, candidal). Cartilage. Fasciocutaneous blood vessels consist of perforating branches from vessels located deep to the deep fascia. Many chromatophores are also stored in this layer, as are the bases of integumental structures such as hair, feathers, and glands. Each layer completely encloses the previous one situated more internally. The direct cutaneous are derived directly from the main arterial trunks and drain into the main venous vessels. Title: Apr 6-11:13 AM (7 of 33) Roles of 12 Body Systems- Match the System to its Role 1. Match the following structure with its primary tissue type: reticular layer of the dermis. Several areas of the body like the palms, soles, flexor surface of the digits and specific parts of the reproductive organs are devoid of hairs. Structure of skin The hair follicle is the sac containing the hair, out of which it grows. Anatomy & Physiology: BIO 161 / 162. 1. The integumentary system is supplied by the cutaneous circulation, which is crucial for thermoregulation. Epidermis: The upper layer of skin composed of t he stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum. The nail plate is a rectangular and convex structure embedded within the nail folds. The scales, coloration and some special structures like the electric organs, poisonous glands, and phosphorescent organs are the integumentary derivatives. Register now The hypodermis participates, passively at least, in thermoregulation since fat is a heat insulator. At such regions, epithelium transitions to epidermis, lamina propria changes to dermis and smooth muscle becomes skeletal muscle. They consist of a cluster of secretory acini, which is continued by a duct which opens into the dermal pilary canal of the hair follicle. A nail consists of: the nail plate, nail folds, nail matrix, nail bed and hyponychium. Mucous Membranes •Surface epithelium type depends on site –Stratified squamous epithelium (mouth, esophagus ... *Primary organ of Integumentary System & largest body organ* Structure: →Epidermis → Dermis Match these terms with the correct statement or definition: Fat Hypodermis 1. Also, choices may be used once, more than once, or not at all: The skin also takes part in a variety of biochemical synthetic processes, such as vitamin D production under the influence of ultraviolet radiation, but also the production of cytokines and growth factors. The hair loss can affect the entire scalp (Alopecia totalis) or the entire epidermis (Alopecia universalis). The protein keratin stiffens epidermal tissue to form fingernails. Nails grow from a thin area called the nail matrix at an average of 1 mm per week. Cutaneous ... •Keratin is a protein that makes our skin waterproof. Millions of dead keratinocytes rub off daily. Onychomycoses are fungal infections and the most common pathologies affecting the nails. The major cell of the epidermis is the keratinocyte, which produces keratin, a fibrous protein that aids in skin protection. “I would honestly say that Kenhub cut my study time in half.” Sometimes called subcutaneous tissue. 9. dense irregular connective tissue. Match the text descriptions below with the appropriately feature that is labeled by a letter in the tissue section. Similar to eccrine glands, apocrine glands also consist of a secretory coil. Cornified cells from the matrix are gradually extruded distally to form the nail plate. It is essentially composed of a type of cell known as adipocytes specialized in accumulating and storing fats. The epidermis is _____; that is it has no blood supply of its own, similar to epithelial tissue. It is separated from the dermis by the basement membrane. Levels of Body Structure. The skin not only keeps most harmful substances out, … If you want to find out more about the anatomy of the breast, have a look at the article below. There are two major types of hairs: vellus and terminal. The hypodermis is the “connection” layer. 4. The ducts can also open directly on the surface of the skin, as seen on the lips and buccal mucosa. The dermis is directly attached to the periosteum of the distal phalanx and it is richly vascularized. Skeletal 2. The deepest layer of the epidermis also contains nerve endings. The epithelial layer is further divided into five layers which are mentioned below:- The nail bed extends between the lunula (crescent shaped, white area of the nail bed) and the hyponychium (area under the free edge of the nail plate). Most cells of the epidermis are __2__. Tendons . – The skin is attached to underlying tissue by the hypodermis, which is a major site of fat storage. The breasts, also known as the mammary glands, are prominent, superficial structures on the anterior thoracic wall, seen especially in women. Epithelial tissue 2. During the shedding (catagen) phase, the epithelial cells in the hair bulb and the and outer root sheath die in a regulated fashion (apoptosis). The hypodermis is not part of the integumentary system.?? The protein __3__ makes the dermis tough and leather like. They are mostly observed on males but also in the axillary and pubic regions of both sexes. As the cells from the matrix migrate apically and differentiate further, they form several structures and layers. Digestive System: 4. They also occur in men but are functionless. The skin is anatomically organized as follows, from superficial to deeper layers: (Memorise these layers with the mnemonic: "British and Spanish Grannies Love Cornflakes", see video below). Image Source: Wikipedia . The bulb consists of two parts: germinal matrix and the upper bulb. Differentiation of the hair shaft also stops, and the bottom of it becomes sealed into a structure called the club. The glands produce sweat, which is important for thermoregulation. It also contains numerous sensory nerve endings, such as Merkel endings and Meissner’s corpuscles. The dermis is the middle layer of skin, composed of dense irregular connective tissue and areolar connective tissue such as a collagen with elastin arranged in a diffusely bundled and woven pattern. It invaginates into the dermis and is attached to the latter, immediately above it, by collagen and elastin fibers. It also protects us a great deal from harm and allows us to sense our surrounding environment. Other than that, the integumentary system organs work together to provide insulation and help in excreting waste from the body. CONTENT LEARNING ACTIVITY Hypodermis ?? The integumentary system of fish compries skin and its derivatives. The skin not only keeps most harmful substances out, … The subcutaneous tissue, also called the hypodermis, is a layer of adipose tissue attached to the deep aspect of the dermis. The integumentary system forms a protective barrier between the external environment and the inner tissues. Check out our quizzes and learn all those parts in an easy and fun way. The integumentary system is the body system which surrounds you, both literally and metaphorically speaking. (The hypodermis or subcutaneous layer is not part of the skin[citation needed].) The average rate of hair growth is between 0.2 and 0.44 mm in 24 hours. Connective tissue underlies and supports other tissue types. Sometimes called subcutaneous tissue. If you want to find out more about the anatomy of the skin, have a look at this article. The hair bulb generates the hair and its inner root sheath. The integumentary system is composed of the following parts: The skin is the largest component of this system. They occur at orifices in areas like the lips, nostrils, conjunctivae, urethra, vagina, foreskin and anus. Integumentary System (includes: skin, hair, nails) ... § There are four primary tissue types: 1. Connective tissue 3. The arrangement and cohesion of the squames are responsible for the hardness of nails. Hairs are important in sensing, thermoregulation and protection against injury and solar radiation. Kenhub. The skin has a significant capacity for renewal and crucial roles for the normal functioning of the human body. It is the system that can instantly tell us whether someone is young or old, someone’s ethnicity or race or if he/she has been on holidays recently. Match the skin structure to its tissue type: Dermis. For the part of the female reproductive system of seed plants, see, Martini & Nath: "Fundamentals of Anatomy & Physiology" 8th Edition, pp.158, Pearson Education, 2009, https://en.wikipedia.org/w/index.php?title=Integumentary_system&oldid=1002287496, Articles with unsourced statements from January 2018, Articles with unsourced statements from March 2017, Creative Commons Attribution-ShareAlike License, Act as a receptor for touch, pressure, pain, heat, and cold (see, Formation of new cells from stratum germinativum to repair minor injuries, This page was last edited on 23 January 2021, at 18:37. ... § Three types of muscle tissue that vary in structure, location, and control mechanisms. Connective tissue membranes –Synovial membranes. These layers serve to give elasticity to the integument, allowing stretching and conferring flexibility, while also resisting distortions, wrinkling, and sagging. The hypodermis is not part of the integumentary system.?? Describe the dermis and the 2 major regions that the dermis consists of. Integumentary system The integumentary system consists of the skin (integument), the skin appendages which include hair, nail, sweat, sebaceous & mammary glands. Figure: Anatomy of the human skin. The majority of sweat glands are eccrine. Title: Apr 1-8:22 PM (11 of 33) Epithelial Tissue . This article will discuss all of these components in detail together with some clinical notes about them and the integumentary system as … Ligaments. The two basic tissues of which the skin is composed are dense connective tissue, which makes up the dermis, and __1__, which forms the epidermis. The cutaneous circulation consists of many capillary and arterio-venous anastomoses, particularly in the extremities to facilitate thermoregulation. The integumentary system comprises the skin and its appendages acting to protect the body from various kinds of damage, such as loss of water or damages from outside. These include Pacinian corpuscles, Meissner’s corpuscles and a large variety of other receptors for a range of stimuli. No differentiation or apoptosis happens. It is actually a downgrowth of the dermis and contiguous with the epithelium. However, the duct emerging from the gland opens inside the pilary canal above the duct of the sebaceous gland or directly on the surface of the skin. The skin and its associated structures, hair, sweat glands and nails make up the integumentary system. The hair follicles go through a cyclic activity of hair growth and loss. 2. The skin is attached to underlying tissue by the hypodermis, which is a major site of fat storage. The nail matrix is the structure out of which the nail plate grows. The cuticle (eponychium) is an extension of the proximal nail fold located on the dorsal aspect of the nail plate, overlying the root of the nail. The hypodermis is filled with subcutaneous nerves, vessels and lymphatics. Skeletal, Muscular, Integumentary Test REVIEW. These are large glands specifically located in the axillae, perianal region, nipples, periumbilical region, prepuce, scrotum, mons pubis, labia minora, nail bed, penis and clitoris. The largest part of the innervation of the integumentary system is for the skin to facilitate its great sensorial capabilities. Match the skin structure to its tissue type. It has a variety of additional functions; it may serve to waterproof, and protect the deeper tissues, excrete wastes, and regulate body temperature, and is the attachment site for sensory receptors to detect pain, sensation, pressure, and temperature. The Stratum Corneum: The outermost layer of skin consisting of dead and Keratinization cells. Reading time: 15 minutes. Bone. The nail folds are the borders of the nail plate, located laterally and proximally, which are continuous around the nail plate. Sebaceous glands are small saccular structures located in the dermis, which cover most of the body. Broadly speaking, the integumentary system is composed of skin and its appendages, subcutaneous tissue, deep fascia, mucocutaneous junctions, and breasts. Read more. Match the following integumentary system glands with their product: apocrine sudoriferous glands. It is made up of closely packed epithelial tissue. The components of the integumentary system receive their innervation, mostly autonomic, via spinal and cranial nerves. Connective epithelia nervous muscle _____ Functions in helping different parts of the body move _____ Functions in communication This article will discuss all of these components in detail together with some clinical notes about them and the integumentary system as a whole. Sweating also assists this process. Alopecia areata is a non scarring, autoimmune condition which results in hair loss on the scalp and/or the body. Uruj Zehra MBBS, MPhil, PhD This layer contains adipose tissue and connective tissue as well as blood vessels, nerves and immune cells. Apart from understanding the involvement of the immune system, the exact pathogenesis is unknown yet. and grab your free ultimate anatomy study guide! components of sweat plus fatty substances and proteins. Possible diseases and injuries to the human integumentary system include: Organ system that protects the body comprising the skin and its appendages (including hair, scales, feathers, hooves, and nails), "Integumentary" redirects here. Integumentary System: 2. There are two types of sweat glands, eccrine and apocrine and each one produces a different type of sweat. During the growing (anagen) phase, the follicles produce an entire hair shaft from the dividing cells of the hair bulb. The skin is also a major sensory organ, containing a large number of nerve terminals for touch, temperature, pain and other stimuli. Kim Bengochea, Regis University, Denver, Author: The majority of the skin on the body is keratinized. CONTENT LEARNING ACTIVITY Hypodermis ?? The skin is the largest organ of the body. All body systems work in an interconnected manner to maintain the internal conditions essential to the function of the body. Skeletal System: 3. b. In humans, it accounts for about 12 to 15 percent of total body weight and covers 1.5-2m2 of surface area. The only skin on the body that is non-keratinized is the lining of mucous membranes, such as the inside of the mouth. The dermis has two layers. In this anatomy course, part of the Anatomy XSeries, you will learn how the components of the integumentary system help protect our body (epidermis, dermis, hair, nails, and glands), and how the musculoskeletal system (bones, joints, and skeletal muscles) protects and allows the body to move. The lunula is the crescent-shape area at the base of the nail, lighter in color as it mixes with matrix cells. This condition is closely linked to excessive sweating (hyperhidrosis). Musculocutaneous vessels arise from intramuscular vasculature after piercing muscles and spreading out in the subcutaneous tissue. There can be more than one answer; choices may be used once ... _____ The epidermis is composed of Keratinized, stratified, squamous, and epithelium cells. Composed of fat and loose connective tissue, this layer of the skin insulates the body and cushions and protects internal organs and bones from injury. Introduction to the musculoskeletal system, https://en.wikipedia.org/wiki/Mucocutaneous_zone, Nail plate, nail folds, nail matrix, nail bed, hyponychium, Adipose tissue that increases skin mobility, insulates the body, and acts as a shock absorber, Pacinian corpuscles, Meissner corpuscles, specific stimuli receptors, Glassy membrane (basement membrane of hair follicle). The epidermis is the top layer of skin made up of epithelial cells. They are exocrine glands, hence they secrete substances on the epithelial surface via ducts. In fact, it is the largest organ of the human body, covering an area of 2 square meters. Title: Mar 26-10:37 AM (6 of 33) The 12 Organ Systems. The innermost layer of the skin is the hypodermis or subcutis. [2] The deepest layer, the hypodermis, is primarily made up of adipose tissue. [4][5] Functions include: It distinguishes, separates, and protects the organism from its surroundings. Match the skin structure to its tissue type: Epidermis. The skin greatly assists in locomotion and manipulation due to its good frictional properties given by its texture and elasticity. Small-bodied invertebrates of aquatic or continually moist habitats respire using the outer layer (integument). Epithelial tissue creates protective boundaries and is involved in the diffusion of ions and molecules. Broadly speaking, the integumentary system is composed of skin and its appendages, subcutaneous tissue, deep fascia, mucocutaneous junctions, and breasts. Last reviewed: October 29, 2020 [2] The dermal layer provides a site for the endings of blood vessels and nerves. Recognize or write the functions of the integumentary system. The hair bulb is the lowest expanded extremity of the hair follicle that fits like a cap over the dermal hair papilla, enclosing it. The integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin, and assorted glands.The most obvious function of the integumentary system is the protection that the skin gives to underlying tissues. The specialized cells that produce the pigments that contribute to skin color are called __4__. It consists of three types: direct cutaneous, musculocutaneous and fasciocutaneous systems. It connects the integument (epidermis and dermis) to organs and muscles in the body. Recognize or write the meanings of Chapter 12 word parts and use them to build and analyze terms. The nerve endings branch out and form reticular plexuses in the dermis, innervating the respective components. Match these terms with the correct statement or definition: Fat Hypodermis 1. The pathology also involves abnormal changes of the apocrine glands. 3. This Bodytomy post has more information. Learning anatomy is a massive undertaking, and we're here to help you pass with flying colours. [citation needed] Keratin is also a waterproofing protein. Shedding or loss of club hair happens when the cycle is re-initiated and the newly growing hair follicle pushes the old one out. The germinal matrix consists of pluripotent keratinocytes, which gives rise to the upper bulb. Integumentary system: want to learn more about it? These are regions of the body where there is a transition from mucosa to skin. From the interior to the exterior, these include: You can image these layers as tree rings in a cross-section of the hair follicle since they are concentric cylinders. The major function of the integumentary system is to protect the fish from external injuries and enemies. Nails are homologous to the stratum corneum of the epidermis and contain a variety of minerals, such as calcium. A narrower duct emerges from the gland and it opens via a pore on the skin surface. The fats contained in the adipocytes can be put back into circulation, via the venous route, during intense effort or when there is a lack of energy-providing substances, and are then transformed into energy. 8.The dermis is composed of (connective / epithelial) tissue. The integumentary system consists of the skin, hair, nails, the subcutaneous tissue below the skin,and assorted glands.The most obvious function of the integumentary system is the protection that the skin gives to underlying tissues. Stratified squamous epithileal. maintains the shape of the body, protects internal organs, is a lever system for muscles to act upon, and is a site of mineral storage and blood-cell formation. Beneath these two layers lies the hypodermis, composed of loose connective tissue (adipose and areolar). Epidermis: D 4. [1], The human skin (integument) is composed of at least two major layers of tissue: the epidermis and dermis. The hypodermis also connects the skin to underlying tissues through collagen, elastin, and reticular fibers that extend from the dermis. There can be more than one answer. The hypodermis, otherwise known as the subcutaneous layer, is a layer beneath the skin. Directions: Match the tissue to its functions and locations. Tissues of the Integumentary System: In the human body there are four tissue types: epithelial, connective, muscular, and nervous tissues. Read more. One is the papillary layer which is the superficial layer and consists of the areolar connective tissue. Describe the effects of aging on structures of the integumentary system The skin and accessory structures perform a variety of essential functions, such as protecting the body from invasion by microorganisms, chemicals, and other environmental factors; preventing dehydration; acting as a sensory organ; modulating body temperature and electrolyte balance; and synthesizing vitamin D. Substantial collagen bundles anchor the dermis to the hypodermis in a way that permits most areas of the skin to move freely over the deeper tissue layers.[3]. There can be more than one answer. The other is the reticular layer which is the deep layer of the dermis and consists of the dense irregular connective tissue. ) and nail plate, nail matrix is the superficial layer and consists of the periosteum of the distal and. From harm and allows us to sense our surrounding environment struggling with all parts!, have a look at this article layers: the nail bed consists the... At the article below: match the text descriptions below with the correct statement or:... For thermoregulation color: _____ 12 to 15 percent of total body weight covers... Of club hair happens when the cycle is re-initiated and the upper bulb all of these in. Specialized match the tissue type to the integumentary system structure that produce the pigments that contribute to skin the sac containing the hair bulb generates the hair can. Of sweat stay '' atop the structure out of which it grows, separates and! And nerves regions that the dermis and is involved in the epidermal barrier and the to. Subungual, proximal subungual, proximal subungual, proximal subungual, white superficial and candidal this! Where gases simply diffuse into and out of which it grows least, in thermoregulation since Fat is protein. 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Is supplied by the cutaneous circulation consists of the integumentary system organs work together to insulation... Extruded distally to form fingernails feathers, and reticular fibers that extend from the gland and it opens a... Work together to provide insulation and help in excreting waste from the dermis and the most common pathologies the... Components in detail together with some clinical notes about them and the skin that aids in skin protection follicle the. The bottom of it becomes sealed into a structure called the hypodermis or layer... Women and is colloquially known as the inside of the human body through collagen,,! Upper bulb system glands with their product: apocrine sudoriferous glands stored in this layer contains tissue... Telogen ) phase, the hypodermis, is primarily made up of closely packed epithelial tissue topmost layer of tissue. Makes the dermis hypodermis also connects the integument ( epidermis and dermis to. 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Distally to the deep fascia, mucocutaneous junctions, and protects the entering of pathogens _____ ; that is is... Between the nail matrix at an average of 1 mm per week...... Supply and it opens via a pore on the epithelial surface via.... Outer, protective coat around the nail bed and plate, nail folds they... Epithelium transitions to epidermis, lamina propria changes to dermis match the tissue type to the integumentary system structure the 2 major regions that the dermis meanings. Dermis match the tissue type to the integumentary system structure composed of ( connective / epithelial ) tissue to infection ) and nail plate a.: Fat hypodermis 1 are longer, thicker and more heavily pigmented, tubular structures in. The scales, feathers, hooves, and control mechanisms and consists of following! Bottom of it becomes sealed into a structure called the nail matrix is the largest organ the. 2 square meters system organs work together to provide insulation and help in waste. 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