Most of the skin is haired although the hair in most areas is short, fine and only lightly pigmented. Skin structure and growth chapter 7 flashcards quizlet. The density and size of hairs is highly variable, as is their orientation in the skin. The skin and its appendages make up the integumentary system. 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. Study 26 ch 5 appendages of the skin flashcards from karina l. Functions of the integumentary system boundless anatomy and.
Appendages of the skin sebaceous glands produce oil lubricant for skin which keeps skin soft and moist prevents brittle hair kills bacteria slightly acidic most have ducts that empty into hair follicles. Study skin and appendages flashcards at proprofs welcome to the electronic classroom of the 21st century. Introduction our largest organ accounts for 12% of body weightit weighs twice as much as your brain. Appendages of the skin article about appendages of the skin. Chapter 14 flashcards flashcard machine create, study. There are 7 layers in the human skin, the epidermis has 3 layers and the dermis has 4 layers, making the total to. Asiatic hair follicles are arranged perpendicular to the skin surface. In addition, the sensors in our skin keep us protected by making us aware of conditions that could harm us. Complete this figure by following the directions in steps. Skin and appendages dr laxman khanal mshuman anatomy batch 2011 2. Print chapter 5 appendages of the skin flashcards and study them anytime, anywhere. They are a part of the unit that contains the hair follicle and hair and produce sebum a moisturizer for both hair and skin. Organs such as hair, sweat glands and sebaceous glands that develop from the embryonic epidermis are labelled appendages of the skin or epidermal derivatives.
The integumentary system consists of the skin, the feathers and the appendages claws and beak. Basic skin histology the skin is divided into two main regions, the epidermis, and the dermis. Sweat glands are distributed all over the body except nipples and outer genitals. One of the ways the skin helps regulate body temperature is through the evaporation of. This skin is an amazing organ that is designed to protect the human body from many outside elements, one being harmful uv rays. The middle layer of skin, beneath the basement membrane. It is composed of two layers and contains many different types of appendages, including hair, nails, and several kinds of. This image details the parts of the integumentary system. The two basic tissues of which the skin is composed are dense irregular. Modified skin cells responsible for prying, scrapping, and pickup things. Watch skin lecture define all terms under tissue box assignment in a quizlet using the disorders below in the outline, make a chart with the disorder, description, cause, signs and symptoms, and treatment.
Beneath the dermis lies a loose layer of skin rich in fat and areolar tissue called the. This anatomy quiz on the skin structure of the integumentary system is developed to test your knowledge on the layers, appendages, and nerve endings in the skin. Return to the dermatology medical education contents. Sebaceous glands produce an oily product sebum, usually connected by a duct into a hair follicle. It is composed of two layers and contains many different types of appendages, including hair, nails, and several kinds of glands. Watch skin lecture define all terms under tissue box assignment in a quizlet using the disorders below in the outline, make a chart with the disorder, description, cause, signs and. Print chapter 5 appendages of the skin flashcards easy.
Introduction to skin histology the skin is considered the largest organ of the body and has many different functions. The main functions of the skin are protection barrier against ultraviolet radiation, microorganisms, and water loss, the synthesis of vitamin d, detection of sensation e. Types of appendages include hair, glands, and nails. Skin has many appendages that are also included in the integumentary system. Caucasian hair follicles are arranged obliquely to the skin. The stratum corneum is the thickest epidermal layer at roughly 2030 cells deep making up to 75% of the epidermal layer. In human anatomy, the covering, or integument, of the bodys surface that both provides protection and receives sensory stimuli from the external environment. The covering system for the body for protection, regulation, and metabolism. What can you tell us in this multiplechoice examination.
Hairs grow from a cavity called hair follicle, which is located in the dermis as seen in the figure. Skin appendages or adnexa are skinassociated structures that serve a particular function including sensation, contractility, lubrication and heat loss. How and why to use it for antiaging, lymphatic drainage, and depuffing duration. The dermis is attached to an underlying hypodermis, also called subcutaneous connective tissue. Sebum keeps the skin and hair soft and contains bacteriakilling chemicals figure 4. Accessory structures of the skin include hair, nails, sweat glands, and sebaceous glands. The integument or skin is the largest organ in the body. Skin appendages are appendages that are associated with the skin and serve a particular function. The skin covers the majority of the body and contains glands in the outer ear canal and the preen gland at the base of the tail, that the bird uses to preen its feathers. In humans some of the more common skin appendages are hairs sensation, heat loss, filter for breathing, protection, arrector pili smooth muscles that pull hairs straight, sebaceous glands secrete sebum onto hair follicle to oil the hair, sweat glands can be. Ideally, by studying the skin and its appendages before you proceed to the more complex organ systems in the chapters that follow, you will improve your understanding of how structure is related to function.
Skin that has four layers of cells is referred to as thin skin. Start studying skin structure and growth chapter 7. Identify the two portions of the follicle wall by placing the correct name of the sheath at the end of the appropriate leader line. Modified skin cells responsible for protection and insulation. Appendages of the skin worksheet from anatomy basic anat at olentangy liberty high. Integumentary system is a term used to denote the skin and its appendages. The skin is an organ that performs a vital function for our body. Choose from 500 different sets of skin appendages flashcards on quizlet. Figure 43 is a diagram of a crosssectional view of a hair in its follicle. The layer where the skin is thick, such as the palms of the hands and the soles of the feet, is 10 12.
Skin color is a reflection of balancing act of preventing. Skin and skin appendage knowledge for medical students and. Hair nails sudoriferous sweat and sebaceous oil glands. Which includes the nails, hair, sense receptors, sweat glands and oil glands. Answers ch 7 answers chapter 7 skin and its appendages skin. Thick skin is found only on the palms of the hands and the soles of the feet. The skin and it appendages hair, nails, skin glands are collectively know as the integumentary system the outer most layer of the skin that consists of stratified squamous epithelial tissue, is called. The appendages of the skin are the same as the organs contained in the integumentary system.
Integumentary system development boundless anatomy and. Thick skin has a thinner dermis than thin skin, and does not contain hairs, sebaceous glands, or. Skin and the integumentary system chapter 6 this chapter describes the skin and its appendages. Although most of the commercialized skin substitutes can promote wound healing well, it remains a challenge to regenerate skin with complete appendages figure 52. Key step in beginning to form any of the skins appendages.
The integumentary system includes hair, scales, feathers, hooves, and nails. At the base of the hair follicle is an enlarged hair bulb. Zoology any organ that projects from the trunk of animals such as arthropods 2. Skin and skin appendage knowledge for medical students. It performs many vital functions, including protection against external physical.
Skin appendages are formed from the epidermis but reside in the dermis. The nails, hair, and the sebaceous and sweat glands. It helps our body control its temperature, protect us from uv radiation and other environmental hazards. From deep to superficial, these layers are the stratum basale, stratum spinosum, stratum granulosum, and stratum corneum. Downward bits of the epidermis, which interdigitate with the d the upward bits of the dermis which interdigitate with the epi the top layer of skin, which sits on the basement membrane.
This article will discuss all of these components in detail together with some clinical notes about them and the integumentary system as. Nail and the enamel of your teeth also derive from the epidermis in this lab, we. Although the nipples do have the mammary glands, these are known as modified sweat glands. Skin appendages are derived from the skin and include hair, nails, and glands. Kolarsick, bs, maria ann kolarsick, msn, arnpc, and carolyn goodwin, aprnbc, fnp chapter 1 introduction the skin is the largest organ of the body, accounting for about 15% of the total adult body weight. Learn skin appendages with free interactive flashcards. These structures embryologically originate from the epidermis and can. The stratified squamous epithelial mucosa of the anal canal connects to the skin on the outside of. Caucasian hair follicles are arranged obliquely to the skin surface.
The skin appendages, such as hair follicles, sweat glands, and sebaceous glands, make the skin function well in touch, temperature sensation, excretion, perspiration, and thermoregulation. Skin appendages definition of skin appendages by medical. Choose from 500 different sets of appendages of the skin flashcards on quizlet. Hairs and nails are modified epidermal cells composed of keratin. Learn appendages of the skin with free interactive flashcards. Appendages of the skin skin appendages are formed from the epidermis but reside in the dermis. Structures related to the integument such as hair follicles and sweat glands. Can you identify the five major layers of the epidermis. Skin appendages the skin contains a variety of appendages, mainly hair follicles hf, sweat glands, and sebaceous glands sg, which are all embrylogically epidermal in origin. Answers ch 7 answers chapter 7 skin and its appendages. In this scientific quiz, well be taking a look at an oftenunderstated biological study the integumentary system, whereby the skin and its associated appendages act to protect our bodies from harm. Hair follicles are found in most regions of skin, except the glans penisclitoris, labia minora, lip and palmssoles.