Deck 5 (MC): The Integumentary System

Question 1

The protein that enables the dermis to stretch and recoil is:

A)keratin
B)collagen
C)elastin
D)All of these permit stretching and recoiling.

Answer 1

C

Question 2

In the skin,mitosis takes place continuously in the:

A)stratum germinativum
B)stratum corneum
C)both of these
D)neither of these

Answer 2

A

Question 3

The primary function of the stratum germinativum is:

A)osmosis to prevent water loss
B)mitosis to produce new dermis
C)osmosis to contribute to sweating
D)mitosis to produce new epidermis

Answer 3

D

Question 4

In the skin,mitosis takes place continuously in the:

A)stratum corneum,to produce new epidermis
B)stratum corneum,to produce new dermis
C)stratum germinativum,to produce new dermis
D)stratum germinativum,to produce new epidermis

Question 5

Defensive cells in the integumentary system include subcutaneous WBCs and:

A)Langerhans cells in the epidermis
B)adipocytes in the dermis
C)melanocytes in the epidermis
D)keratinocytes in the dermis

Question 6

The part of the integumentary system that connects the skin to the muscles is the:

A)epidermis
B)dermis
C)subcutaneous tissue
D)mucous membrane

Question 7

The part of a cow's integument that we know as leather is the:

A)epidermis
B)dermis
C)subcutaneous tissue
D)all of these

Question 8

The primary function of the stratum germinativum is:

A)osmosis
B)mitosis
C)absorption
D)protection

Question 9

Which statement is NOT true of the integumentary system?

A)It consists of the skin and subcutaneous tissue.
B)It covers the body.
C)Some glands are part of this system.
D)It permits the entry of water to maintain body temperature.

Question 10

The part of the integumentary system that contains sweat glands and sensory receptors is the:

A)epidermis
B)dermis
C)subcutaneous tissue
D)mucous membrane

Question 11

Which statement is NOT true of the skin?

A)Collagen provides strength to the epidermis.
B)The epidermis is the outer layer.
C)Stratified squamous epithelium forms the epidermis.
D)The dermis is external to the subcutaneous tissue.

Question 12

The epidermis is the ___ layer of the skin and is made of ___ tissue.

A)outer/stratified squamous epithelial
B)inner/stratified squamous epithelial
C)outer/fibrous connective
D)inner/fibrous connective

Question 13

Collagen and elastin are the major proteins of the:

A)epidermis
B)dermis
C)both A and B
D)both A and B,and the subcutaneous tissue

Question 14

The part of the integumentary system that prevents entry of pathogens is the:

A)epidermis
B)dermis
C)subcutaneous tissue
D)eccrine glands

Question 15

The layer of the skin that is made of stratified squamous epithelium is the:

A)dermis
B)subcutaneous layer
C)epidermis
D)None of these layers is made of this tissue.

Question 16

The protein that provides strength to the dermis is:

A)keratin
B)collagen
C)elastin
D)All of these provide strength.

Question 17

The dermis is the ___ layer of the skin and is made of ___ tissue.

A)outer/stratified squamous epithelial
B)inner/stratified squamous epithelial
C)outer/fibrous connective
D)inner/fibrous connective

Question 18

The outer layer of the skin is the ___,and the inner layer of the skin is the ___.

A)dermis/superficial fascia
B)epidermis/dermis
C)dermis/epidermis
D)epidermis/superficial fascia

Question 19

The major proteins of the dermis are:

A)keratin and collagen
B)collagen and melanin
C)melanin and elastin
D)elastin and collagen

Question 20

The layer of the skin that is made of fibrous connective tissue is the:

A)dermis
B)subcutaneous layer
C)epidermis
D)None of these layers is made of this tissue.

Question 21

Which statement is NOT true of the stratum corneum?

A)The cells are called keratinocytes.
B)Keratin prevents movement of most water in or out.
C)The stratum corneum is made of one layer of dead cells.
D)The cells die after they produce keratin.

Question 22

A hair follicle:

A)has its base in the dermis
B)has a hair root at its base
C)both A and B
D)both A and B,and has a pilomotor muscle that can pull the follicle upright

Question 23

The functions of the stratum corneum include all of these except:

A)prevention of water loss
B)prevention of sunburn
C)prevention of the entry of water
D)prevention of the entry of bacteria and chemicals

Question 24

Which statement is NOT true of human hair?

A)The hair root undergoes mitosis.
B)A hair is formed in a structure called a follicle.
C)All human hair grows continuously.
D)The hair shaft is made of keratin.

Question 25

The cells in the epidermis that are capable of phagocytosis are:

A)Langerhans cells
B)keratinocytes
C)melanocytes
D)Merkel cells

Question 26

The function of melanin is to protect living skin layers from more:

A)pressure
B)friction
C)UV rays
D)color

Question 27

Prevention of the entry of pathogens is a function of the:

A)stratum corneum
B)stratum germinativum
C)dermis
D)subcutaneous tissue

Question 28

The protein in the epidermis that prevents water loss is:

A)melanin
B)keratin
C)collagen
D)elastin

Question 29

Melanocytes produce ___ when stimulated by ___.

A)melanin/UV rays
B)keratin/pressure
C)melanin/pressure
D)keratin/UV rays

Question 30

The cells that produce pigment for the skin and hair are called:

A)fibroblasts
B)melanocytes
C)squamous cells
D)dermal cells

Question 31

Which statement is NOT true of the epidermis?

A)Meiosis takes place in the stratum germinativum.
B)The cells die as they are pushed toward the surface.
C)Langerhans cells bring pathogens to lymph nodes.
D)The epidermis has no capillaries of its own,and must rely on those of the dermis.

Question 32

Which of these is NOT a function of human hair?

A)keeping dust out of the eyes
B)insulating the hands from cold
C)insulating the head from cold
D)keeping dust out of the nasal passages

Question 33

Prevention of water loss is a function of the:

A)stratum germinativum
B)dermis
C)stratum corneum
D)subcutaneous tissue

Question 34

Melanin gives color to the epidermis,and also to the:

A)hair
B)iris of the eye
C)both A and B
D)both A and B,and to the dermis

Question 35

The activity of melanocytes is determined by:

A)genetics
B)exposure to the sun
C)both A and B
D)both A and B,and by the helper keratinocytes

Question 36

The Langerhans cells of the integumentary system are important for:

A)skin coloration
B)defense against pathogens
C)detecting changes in the external environment
D)repair of minor breaks in the skin

Question 37

Which statement is NOT true of melanocytes?

A)They are found in the epidermis.
B)They give color to the hair and nails.
C)The melanin they produce protects living skin from UV rays.
D)The production of melanin is,in part,a genetic characteristic.

Question 38

Ultraviolet rays of the sun stimulate production of ___ in the skin.

A)keratin
B)collagen
C)melanin
D)all of these

Question 39

The stratum corneum is made of layers of cells that:

A)undergo mitosis
B)are producing keratin
C)are producing collagen
D)are dead

Question 40

The function of keratin is to:

A)prevent the entry of water
B)prevent the entry of pathogens
C)both A and B
D)both A and B,and prevent the loss of water

Question 41

The growth of bacteria on the skin surface is inhibited by:

A)keratin
B)sweat
C)sebum
D)melanin

Question 42

In a warm environment,the arterioles in the dermis will:

A)dilate to lose heat
B)constrict to lose heat
C)constrict to conserve heat
D)dilate to conserve heat

Question 43

A function of sebum is to:

A)promote osmosis
B)nourish the stratum corneum
C)prevent mechanical injury
D)prevent drying of the skin and hair

Question 44

Drying of the eardrum is prevented by:

A)serous fluid from serous glands
B)sebum from sebaceous glands
C)cerumen from ceruminous glands
D)sweat from apocrine glands

Question 45

The cutaneous receptors for pain are:

A)free nerve endings in the dermis
B)free nerve endings of Langerhans cells
C)encapsulated nerve endings in the dermis
D)encapsulated nerve endings in the epidermis

Question 46

The process by which sweating promotes loss of excess body heat is:

A)osmosis of sweat
B)evaporation of sweat
C)secretion of sweat
D)filtration of sweat

Question 47

The function of sebum is to:

A)inhibit the growth of bacteria on the skin
B)prevent drying of the skin
C)both A and B
D)both A and B,and help permit gripping by the palms

Question 48

The cutaneous receptors may be stimulated internally by:

A)the chickenpox virus
B)a mosquito bite
C)both A and B
D)both A and B,and by poison ivy

Question 49

Which statement is NOT true of human nails?

A)They are formed in follicles.
B)They protect the ends of the fingers and toes from mechanical injury.
C)They enable the fingers to pick up small objects.
D)The visible part of the nail is made of collagen.

Question 50

All of the following are made of keratin except the:

A)pigment of the skin
B)fingernails and toenails
C)stratum corneum
D)hair shafts

Question 51

Free nerve endings in the skin are the receptors for:

A)pressure,pain,and itch
B)pain,cold,and pressure
C)touch,pressure,and pain
D)heat,cold,itch,and pain

Question 52

Drying of the skin and hair is prevented by:

A)serous fluid from serous glands
B)sebum from sebaceous glands
C)cerumen from ceruminous glands
D)sweat from apocrine glands

Question 53

Which statement is NOT true of the glands of the skin?

A)Their secretory portions are found in the dermis.
B)Apocrine glands are found in the axillae.
C)Only the sebaceous glands have ducts.
D)Ceruminous glands are found in the skin of the ear canal.

Question 54

The glands in the dermis that are most important for temperature regulation are the:

A)apocrine glands
B)sebaceous glands
C)serous glands
D)eccrine glands

Question 55

Which statement is NOT true of the cutaneous senses?

A)Most of the receptors are in the dermis of the skin.
B)Cutaneous senses provide information about changes in the external environment.
C)The receptors for pressure are encapsulated nerve endings.
D)The fingertips are very sensitive to touch because there are few receptors there.

Question 56

A potentially serious consequence of profuse sweating is:

A)a fever
B)dehydration
C)an abnormally low body temperature
D)an infection

Question 57

Encapsulated nerve endings in the skin are the receptors for:

A)touch,pressure,and pain
B)heat,cold,pressure,and pain
C)touch and pressure
D)cold and pain

Question 58

The function of cerumen is to:

A)prevent drying of the eardrum
B)prevent drying of the hair
C)permit gripping by the palms
D)prevent friction on the skin

Question 59

A nail follicle:

A)has its base in the dermis
B)has a nail root that undergoes mitosis
C)has cells that produce keratin before they die
D)all of these

Question 60

Which statement is NOT true of eccrine sweat glands?

A)They are activated only by external warmth.
B)They are numerous in the palms and soles.
C)Their secretory portions are coiled tubes.
D)Excessive sweating may lead to dehydration.

Question 61

In a stressful situation,the arterioles in the dermis will:

A)dilate to keep blood in the skin for sweating
B)constrict to permit blood to flow to more vital organs
C)dilate to permit blood to flow to more vital organs
D)constrict to prevent sweating

Question 62

The subcutaneous tissue is made of:

A)squamous epithelium and areolar connective tissue
B)adipose tissue and smooth muscle
C)squamous epithelium and smooth muscle
D)areolar connective tissue and adipose tissue

Question 63

The vitamin produced in the skin is:

A)vitamin D,made from cholesterol
B)vitamin C,made from keratin
C)vitamin D,made from keratin
D)vitamin C,made from cholesterol

Question 64

Which statement is NOT true of the arterioles in the dermis?

A)Vasodilation increases blood flow.
B)Vasoconstriction occurs in cold weather.
C)Vasodilation occurs in stress situations.
D)Vasoconstriction decreases blood flow.

Question 65

In a cold environment,the arterioles in the dermis will:

A)dilate to lose heat
B)constrict to lose heat
C)constrict to conserve heat
D)dilate to conserve heat

Question 66

The stimulus for the production of vitamin D in the skin is:

A)heat
B)friction
C)pressure
D)ultraviolet rays

Question 67

Superficial fascia is another name for the:

A)integumentary system
B)epidermis
C)dermis
D)subcutaneous tissue

Question 68

Vasodilation in the dermis is important to:

A)increase heat loss in a warm environment
B)conserve heat in a warm environment
C)increase heat loss in a cold environment
D)conserve heat in a cold environment

Question 69

Blood flow through the dermis of the skin is increased by:

A)vasoconstriction in cold weather
B)vasoconstriction in hot weather
C)vasodilation in hot weather
D)vasodilation in cold weather

Question 70

Adipose tissue that cushions some bones is found in the:

A)epidermis
B)dermis
C)subcutaneous tissue
D)fibrous connective tissue

Question 71

When UV rays strike the skin,these substances are produced:

A)vitamin C and melanin
B)vitamin D and keratin
C)vitamin C and keratin
D)vitamin D and melanin

Question 72

Which statement is NOT true of the subcutaneous tissue?

A)It is found between the dermis and the muscles.
B)Areolar connective tissue contains many RBCs.
C)Adipose tissue stores potential energy.
D)It provides a little insulation from cold.

Question 73

Blood flow through the dermis of the skin is decreased by:

A)vasoconstriction in cold weather
B)vasoconstriction in hot weather
C)vasodilation in hot weather
D)vasodilation in cold weather

Question 74

The subcutaneous tissue that stores potential energy is:

A)areolar connective tissue
B)fibrous connective tissue
C)elastic connective tissue
D)adipose tissue

Question 75

Blood flow through the dermis of the skin is:

A)increased by vasodilation in hot weather
B)decreased by vasodilation in cold weather
C)increased by vasoconstriction in cold weather
D)decreased by vasoconstriction in hot weather

Question 76

Vitamin D is produced in the skin from ___,and promotes absorption of ___ in the small intestine.

A)keratin/sodium
B)melanin/iron
C)cholesterol/calcium
D)collagen/calcium

Question 77

Cholesterol in the skin is important for the synthesis of:

A)keratin
B)vitamin D
C)melanin
D)vitamin C

Question 78

Subcutaneous adipose tissue has all of these functions except:

A)cushioning of some bones
B)providing some insulation from cold
C)storing excess,or potential,energy
D)producing collagen fibers

Question 79

Vasoconstriction in the dermis is important to:

A)increase heat loss in a warm environment
B)conserve heat in a warm environment
C)increase heat loss in a cold environment
D)conserve heat in a cold environment

Question 80

The subcutaneous tissue that contains WBCs to destroy pathogens that enter breaks in the skin is:

A)areolar connective tissue
B)fibrous connective tissue
C)stratified squamous epithelium
D)simple squamous epithelium