Essentials of Anatomy & Physiology 6th Edition By Scanlon Sanders – Test Bank

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Chapter 5 (CO): The Integumentary System

COMPLETION

1.The outer layer of the skin is the __________________________.

ANS: epidermis

PTS:1REF:Rev Ques 1 and 2

2.The inner layer of the skin is the __________________________.

ANS: dermis

PTS:1REF:Rev Ques 1 and 2

3.The outer layer of the skin is the _____________________, which is made of ______________________________ tissue.

ANS: epidermis, stratified squamous epithelial

PTS:1REF:Rev Ques 1 and 2

4.The inner layer of the skin is the ____________________, which is made of __________________________ tissue.

ANS: dermis, fibrous connective

PTS:1REF:Rev Ques 1 and 2

5.The layer of the skin that is made of stratified squamous epithelium is the _________________.

ANS: epidermis

PTS:1REF:Rev Ques 1 and 2

6.The layer of the skin that is made of fibrous connective tissue is the ___________________.

ANS: dermis

PTS:1REF:Rev Ques 1 and 2

7.The dermis is made primarily of the proteins ___________________ and _______________.

ANS:

collagen, elastin

elastin, collagen

PTS:1REF:Rev Ques 1 and 2

8.The lowest layer of the _____________________ is the stratum germinativum, and its function is ___________________________.

ANS: epidermis, mitosis

PTS: 1 REF: Rev Ques 3

9.In the epidermis, new cells are produced by the process of ___________________ in the ________________________________.

ANS: mitosis, stratum germinativum

PTS: 1 REF: Rev Ques 3

10.The process of mitosis in the ___________________________ produces new cells for the epidermis.

ANS: stratum germinativum

PTS: 1 REF: Rev Ques 3

11.The new cells of the epidermis produce the protein _______________________.

ANS: keratin

PTS: 1 REF: Rev Ques 3

12.Keratin is a _______________________ (type of molecule) that helps make the skin relatively waterproof.

ANS: protein

PTS: 1 REF: Rev Ques 3

13.The cells of the epidermis produce antimicrobial chemicals called ____________________.

ANS: defensins

PTS: 1 REF: Rev Ques 3

14.The cells of the epidermis that phagocytize pathogens are the _________________________.

ANS: Langerhans cells

PTS: 1 REF: Rev Ques 3

15.The cells in the epidermis that carry ingested pathogens to lymph nodes are the _____________________________.

ANS: Langerhans cells

PTS: 1 REF: Rev Ques 3

16.Langerhans cells are found in the _____________________ of the skin, where they _______________________________.

ANS: epidermis, phagocytize pathogens

PTS: 1 REF: Rev Ques 3

17.The outermost layer of the epidermis is the ____________________________.

ANS: stratum corneum

PTS: 1 REF: Rev Ques 4

18.The stratum corneum is made of several layers of ____________________, which in turn are made of _____________________.

ANS: dead cells, keratin

PTS: 1 REF: Rev Ques 4

19.Prevention of water loss or entry is a function of the stratum _______________ of the epidermis.

ANS: corneum

PTS: 1 REF: Rev Ques 4

20.Prevention of the entry of pathogens is a function of the stratum _________________ of the epidermis.

ANS: corneum

PTS: 1 REF: Rev Ques 4

21.If intact, the stratum corneum is a very good barrier to ____________________ and ________________________.

ANS:

pathogens, water

water, pathogens

PTS: 1 REF: Rev Ques 4

22.Melanocytes produce the protein __________________ when stimulated by _______________________.

ANS: melanin, ultraviolet rays

PTS: 1 REF: Rev Ques 5

23.Ultraviolet rays stimulate the production of _____________________ by cells called _______________________.

ANS: melanin, melanocytes

PTS: 1 REF: Rev Ques 5

24.Living skin cells are protected from exposure to ultraviolet rays by _________________.

ANS: melanin

PTS: 1 REF: Rev Ques 5

25.Human hair helps keep dust out of the ________________________.

ANS:

eyes

nasal passages

PTS: 1 REF: Rev Ques 6

26.Human hair has an insulating function for the ______________________.

ANS: head

PTS: 1 REF: Rev Ques 6

27.The living part of a hair is the _________________, where the process of ____________ takes place.

ANS: root, mitosis

PTS: 1 REF: Rev Ques 6

28.The shaft of a hair is made of _____________________.

ANS:

keratin

dead cells

PTS: 1 REF: Rev Ques 6

29.The structure in which a hair grows is called a(n) __________________, and the process by which a hair grows is ______________________.

ANS: follicle, mitosis

PTS: 1 REF: Rev Ques 6

30.The ends of fingers and toes are protected from mechanical injury by ________________.

ANS: nails

PTS: 1 REF: Rev Ques 7

31.The living part of a nail is the __________________.

ANS: root

PTS: 1 REF: Rev Ques 7

32.A nail grows by the process of ________________ in the _____________________.

ANS: mitosis, root

PTS: 1 REF: Rev Ques 7

33.The visible portion of a nail is made of _____________________.

ANS: keratin

PTS: 1 REF: Rev Ques 7

34.Scratching an itch is efficient because fingers have __________________________.

ANS: fingernails

PTS: 1 REF: Rev Ques 7

35.Information about the environment outside the skin is provided by __________________.

ANS: receptors

PTS: 1 REF: Rev Ques 8

36.For the cutaneous senses of pain and heat, the receptors are _________________________.

ANS: free nerve endings

PTS: 1 REF: Rev Ques 8

37.For the cutaneous receptors of touch and pressure, the receptors are _________________________________________.

ANS: encapsulated nerve endings

PTS: 1 REF: Rev Ques 8

38.Most cutaneous receptors are found in the ___________________ of the skin.

ANS: dermis

PTS: 1 REF: Rev Ques 8

39.Drying of the skin is prevented by ______________________.

ANS: sebum

PTS: 1 REF: Rev Ques 9

40.The glands that secrete sebum are called _______________________________.

ANS: sebaceous glands

PTS: 1 REF: Rev Ques 9

41.The growth of bacteria on the skin is inhibited by __________________________.

ANS: sebum

PTS: 1 REF: Rev Ques 9

42.The __________________ secreted by the _____________________ inhibits the growth of bacteria on the skin.

ANS: sebum, sebaceous glands

PTS: 1 REF: Rev Ques 9

43.Drying of the eardrum is prevented by _________________ .

ANS: cerumen

PTS: 1 REF: Rev Ques 9

44.The glands that secrete cerumen are called _________________________.

ANS: ceruminous glands

PTS: 1 REF: Rev Ques 9

45.The _____________________ secreted by the __________________________ prevents drying of the eardrum.

ANS: cerumen, ceruminous glands

PTS: 1 REF: Rev Ques 9

46.During hot weather the ___________________ sweat glands increase their rate of secretion.

ANS: eccrine

PTS: 1 REF: Rev Ques 10

47.Sweating promotes heat loss by means of the process of ________________________.

ANS: evaporation

PTS: 1 REF: Rev Ques 10

48.The purpose of sweating is to increase the loss of _____________________, but it has the disadvantage of leading to __________________________.

ANS: heat, dehydration

PTS: 1 REF: Rev Ques 10

49.In a cold environment, the arterioles in the dermis will __________________________.

ANS: constrict

PTS: 1 REF: Rev Ques 11

50.The arterioles in the dermis will constrict when the external environment becomes _______________.

ANS: cold

PTS: 1 REF: Rev Ques 11

51.When the arterioles in the dermis constrict, the loss of body heat will be _________________.

ANS: decreased

PTS: 1 REF: Rev Ques 11

52.In a warm environment, the arterioles in the dermis will _________________________.

ANS: dilate

PTS: 1 REF: Rev Ques 11

53.The arterioles in the dermis will dilate when the external environment becomes _____________________.

ANS: warm

PTS: 1 REF: Rev Ques 11

54.When the arterioles in the dermis dilate, the loss of body heat will be ____________________.

ANS: increased

PTS: 1 REF: Rev Ques 11

55.Vasodilation in the dermis is important to _____________________ heat in a(n) _______________ environment.

ANS: lose, warm

PTS: 1 REF: Rev Ques 11

56.Vasoconstriction in the dermis is important to ______________________ heat in a(n) ___________________ environment.

ANS: conserve, cold

PTS: 1 REF: Rev Ques 11

57.A warm environment stimulates ________________________ in the dermis in order to ______________________ heat.

ANS: vasodilation, lose

PTS: 1 REF: Rev Ques 11

58.A cold environment stimulates ____________________________ in the dermis in order to ______________________ heat.

ANS: vasoconstriction, conserve

PTS: 1 REF: Rev Ques 11

59.In a stressful situation, the arterioles in the dermis will _______________ to allow blood to flow to the ______________________.

ANS: constrict, vital organs

PTS: 1 REF: Rev Ques 11

60.During stressful situations, blood is shunted to vital organs by _______________________ in the dermis.

ANS: vasoconstriction

PTS: 1 REF: Rev Ques 11

61.Vitamin ___________ is produced in skin that is exposed to __________________________.

ANS: D, sunlight

PTS: 1 REF: Rev Ques 12

62.The precursor molecule for vitamin D is ___________________________.

ANS: cholesterol

PTS: 1 REF: Rev Ques 12

63.Vitamin D is important for the absorption of _____________________ in the ___________________________.

ANS: calcium, small intestine

PTS: 1 REF: Rev Ques 12

64.Sunlight on the skin stimulates production of vitamin __________________, which is important for the absorption of ________________________ from food.

ANS: D, calcium

PTS: 1 REF: Rev Ques 12

65.The subcutaneous tissue layer is also called the ______________________________.

ANS: superficial fascia

PTS: 1 REF: Rev Ques 13

66.The subcutaneous tissue is located between the _____________________ and the ________________________.

ANS: dermis, muscles

PTS: 1 REF: Rev Ques 13

67.Between the dermis and the muscles is the __________________________________.

ANS:

subcutaneous tissue

superficial fascia

PTS: 1 REF: Rev Ques 13

68.In the superficial fascia, the tissue that stores potential energy is ___________________.

ANS: adipose tissue

PTS: 1 REF: Rev Ques 13

69.In the superficial fascia, the tissue that contains many white blood cells is _________________________________.

ANS: areolar connective tissue

PTS: 1 REF: Rev Ques 13

70.In the integumentary system, areolar connective tissue is part of the ____________________________________ (layer).

ANS:

subcutaneous tissue

superficial fascia

PTS: 1 REF: Rev Ques 13

71.The layer of the integumentary system that cushions some bones is the ____________________________________.

ANS: subcutaneous tissue

PTS: 1 REF: Rev Ques 13

72.The layer of the integumentary system that provides some insulation from cold is the ___________________________________.

ANS: subcutaneous tissue

PTS: 1 REF: Rev Ques 13

73.The layer of the integumentary system that stores potential energy is the ___________________________________.

ANS: subcutaneous tissue

PTS: 1 REF: Rev Ques 13

 

Chapter 5 (MC): The Integumentary System

MULTIPLE CHOICE

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

a.	epidermis	c.	subcutaneous tissue
b.	dermis	d.	eccrine glands

ANS: A PTS: 1 REF: Rev Ques 1

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

a.	epidermis	c.	subcutaneous tissue
b.	dermis	d.	mucous membrane

ANS: B PTS: 1 REF: Rev Ques 1

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

a.	epidermis	c.	subcutaneous tissue
b.	dermis	d.	mucous membrane

ANS: C PTS: 1 REF: Rev Ques 1

4.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.

ANS: D PTS: 1 REF: Rev Ques 1

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

a.	outer/stratified squamous epithelial	c.	outer/fibrous connective
b.	inner/stratified squamous epithelial	d.	inner/fibrous connective

ANS: A PTS: 1 REF: Rev Ques 2

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

a.	outer/stratified squamous epithelial	c.	outer/fibrous connective
b.	inner/stratified squamous epithelial	d.	inner/fibrous connective

ANS: D PTS: 1 REF: Rev Ques 2

7.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.

ANS: C PTS: 1 REF: Rev Ques 2

8.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.

ANS: A PTS: 1 REF: Rev Ques 2

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

a.	dermis/superficial fascia	c.	dermis/epidermis
b.	epidermis/dermis	d.	epidermis/superficial fascia

ANS: B PTS: 1 REF: Rev Ques 2

10.The major proteins of the dermis are:

a.	keratin and collagen	c.	melanin and elastin
b.	collagen and melanin	d.	elastin and collagen

ANS: D PTS: 1 REF: Rev Ques 2

11.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

ANS: B PTS: 1 REF: Rev Ques 2

12.The protein that provides strength to the dermis is:

a.	keratin	c.	elastin
b.	collagen	d.	All of these provide strength.

ANS: B PTS: 1 REF: Rev Ques 2

13.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.

ANS: C PTS: 1 REF: Rev Ques 2

14.The part of a cow’s integument that we know as leather is the:

a.	epidermis	c.	subcutaneous tissue
b.	dermis	d.	all of these

ANS: B PTS: 1 REF: Rev Ques 2

15.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.

ANS: A PTS: 1 REF: Rev Ques 2

16.In the skin, mitosis takes place continuously in the:

a.	stratum germinativum	c.	both of these
b.	stratum corneum	d.	neither of these

ANS: A PTS: 1 REF: Rev Ques 3

17.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

ANS: D PTS: 1 REF: Rev Ques 3

18.The primary function of the stratum germinativum is:

a.	osmosis	c.	absorption
b.	mitosis	d.	protection

ANS: B PTS: 1 REF: Rev Ques 3

19.The primary function of the stratum germinativum is:

a.	osmosis to prevent water loss	c.	osmosis to contribute to sweating
b.	mitosis to produce new dermis	d.	mitosis to produce new epidermis

ANS: D PTS: 1 REF: Rev Ques 3

20.Defensive cells in the integumentary system include subcutaneous WBCs and:

a.	Langerhans cells in the epidermis	c.	melanocytes in the epidermis
b.	adipocytes in the dermis	d.	keratinocytes in the dermis

ANS: A PTS: 1 REF: Rev Ques 3

21.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

ANS: B PTS: 1 REF: Rev Ques 3

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

a.	Langerhans cells	c.	melanocytes
b.	keratinocytes	d.	Merkel cells

ANS: A PTS: 1 REF: Rev Ques 3

23.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.

ANS: A PTS: 1 REF: Rev Ques 3

24.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

ANS: B PTS: 1 REF: Rev Ques 4

25.Prevention of water loss is a function of the:

a.	stratum germinativum	c.	stratum corneum
b.	dermis	d.	subcutaneous tissue

ANS: C PTS: 1 REF: Rev Ques 4

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

a.	stratum corneum	c.	dermis
b.	stratum germinativum	d.	subcutaneous tissue

ANS: A PTS: 1 REF: Rev Ques 4

27.The stratum corneum is made of layers of cells that:

a.	undergo mitosis	c.	are producing collagen
b.	are producing keratin	d.	are dead

ANS: D PTS: 1 REF: Rev Ques 4

28.The protein in the epidermis that prevents water loss is:

a.	melanin	c.	collagen
b.	keratin	d.	elastin

ANS: B PTS: 1 REF: Rev Ques 4

29.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

ANS: D PTS: 1 REF: Rev Ques 4

30.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.

ANS: C PTS: 1 REF: Rev Ques 3

31.Melanocytes produce ___ when stimulated by ___.

a.	melanin/UV rays	c.	melanin/pressure
b.	keratin/pressure	d.	keratin/UV rays

ANS: A PTS: 1 REF: Rev Ques 5

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

a.	keratin	c.	melanin
b.	collagen	d.	all of these

ANS: C PTS: 1 REF: Rev Ques 5

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

a.	pressure	c.	UV rays
b.	friction	d.	color

ANS: C PTS: 1 REF: Rev Ques 5

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

a.	hair	c.	both A and B
b.	iris of the eye	d.	both A and B, and to the dermis

ANS: C PTS: 1 REF: Rev Ques 5

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

a.	fibroblasts	c.	squamous cells
b.	melanocytes	d.	dermal cells

ANS: B PTS: 1 REF: Rev Ques 5

36.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

ANS: C PTS: 1 REF: Rev Ques 5

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.

ANS: B PTS: 1 REF: Rev Ques 5

38.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

ANS: D PTS: 1 REF: Rev Ques 6

39.Which of these is NOT a function of human hair?

a.	keeping dust out of the eyes	c.	insulating the head from cold
b.	insulating the hands from cold	d.	keeping dust out of the nasal passages

ANS: B PTS: 1 REF: Rev Ques 6

40.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.

ANS: C PTS: 1 REF: Rev Ques 6

41.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

ANS: D PTS: 1 REF: Rev Ques 7

42.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.

ANS: D PTS: 1 REF: Rev Ques 7

43.All of the following are made of keratin except the:

a.	pigment of the skin	c.	stratum corneum
b.	fingernails and toenails	d.	hair shafts

ANS: A PTS: 1 REF: Rev Ques 7

44.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.

ANS: D PTS: 1 REF: Rev Ques 8

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

ANS: A PTS: 1 REF: Rev Ques 8

46.Encapsulated nerve endings in the skin are the receptors for:

a.	touch, pressure, and pain	c.	touch and pressure
b.	heat, cold, pressure, and pain	d.	cold and pain

ANS: C PTS: 1 REF: Rev Ques 8

47.Free nerve endings in the skin are the receptors for:

a.	pressure, pain, and itch	c.	touch, pressure, and pain
b.	pain, cold, and pressure	d.	heat, cold, itch, and pain

ANS: D PTS: 1 REF: Rev Ques 8

48.The cutaneous receptors may be stimulated internally by:

a.	the chickenpox virus	c.	both A and B
b.	a mosquito bite	d.	both A and B, and by poison ivy

ANS: D PTS: 1 REF: Rev Ques 8

49.Drying of the skin and hair is prevented by:

a.	serous fluid from serous glands	c.	cerumen from ceruminous glands
b.	sebum from sebaceous glands	d.	sweat from apocrine glands

ANS: B PTS: 1 REF: Rev Ques 9

50.A function of sebum is to:

a.	promote osmosis	c.	prevent mechanical injury
b.	nourish the stratum corneum	d.	prevent drying of the skin and hair

ANS: D PTS: 1 REF: Rev Ques 9

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

a.	keratin	c.	sebum
b.	sweat	d.	melanin

ANS: C PTS: 1 REF: Rev Ques 9

52.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

ANS: C PTS: 1 REF: Rev Ques 9

53.Drying of the eardrum is prevented by:

a.	serous fluid from serous glands	c.	cerumen from ceruminous glands
b.	sebum from sebaceous glands	d.	sweat from apocrine glands

ANS: C PTS: 1 REF: Rev Ques 9

54.The function of cerumen is to:

a.	prevent drying of the eardrum	c.	permit gripping by the palms
b.	prevent drying of the hair	d.	prevent friction on the skin

ANS: A PTS: 1 REF: Rev Ques 9

55.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.

ANS: C PTS: 1 REF: Rev Ques 9

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

a.	apocrine glands	c.	serous glands
b.	sebaceous glands	d.	eccrine glands

ANS: D PTS: 1 REF: Rev Ques 10

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

a.	osmosis of sweat	c.	secretion of sweat
b.	evaporation of sweat	d.	filtration of sweat

ANS: B PTS: 1 REF: Rev Ques 10

58.A potentially serious consequence of profuse sweating is:

a.	a fever	c.	an abnormally low body temperature
b.	dehydration	d.	an infection

ANS: B PTS: 1 REF: Rev Ques 10

59.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.

ANS: A PTS: 1 REF: Rev Ques 10

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

a.	dilate to lose heat	c.	constrict to conserve heat
b.	constrict to lose heat	d.	dilate to conserve heat

ANS: A PTS: 1 REF: Rev Ques 11

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

a.	dilate to lose heat	c.	constrict to conserve heat
b.	constrict to lose heat	d.	dilate to conserve heat

ANS: C PTS: 1 REF: Rev Ques 11

62.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

ANS: A PTS: 1 REF: Rev Ques 11

63.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

ANS: D PTS: 1 REF: Rev Ques 11

64.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

ANS: A PTS: 1 REF: Rev Ques 11

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

a.	vasoconstriction in cold weather	c.	vasodilation in hot weather
b.	vasoconstriction in hot weather	d.	vasodilation in cold weather

ANS: C PTS: 1 REF: Rev Ques 11

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

a.	vasoconstriction in cold weather	c.	vasodilation in hot weather
b.	vasoconstriction in hot weather	d.	vasodilation in cold weather

ANS: A PTS: 1 REF: Rev Ques 11

67.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

ANS: B PTS: 1 REF: Rev Ques 11

68.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.

ANS: C PTS: 1 REF: Rev Ques 11

69.The vitamin produced in the skin is:

a.	vitamin D, made from cholesterol	c.	vitamin D, made from keratin
b.	vitamin C, made from keratin	d.	vitamin C, made from cholesterol

ANS: A PTS: 1 REF: Rev Ques 12

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

a.	vitamin C and melanin	c.	vitamin C and keratin
b.	vitamin D and keratin	d.	vitamin D and melanin

ANS: D PTS: 1 REF: Rev Ques 12

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

a.	heat	c.	pressure
b.	friction	d.	ultraviolet rays

ANS: D PTS: 1 REF: Rev Ques 12

72.Cholesterol in the skin is important for the synthesis of:

a.	keratin	c.	melanin
b.	vitamin D	d.	vitamin C

ANS: B PTS: 1 REF: Rev Ques 12

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

a.	keratin/sodium	c.	cholesterol/calcium
b.	melanin/iron	d.	collagen/calcium

ANS: C PTS: 1 REF: Rev Ques 12

74.Superficial fascia is another name for the:

a.	integumentary system	c.	dermis
b.	epidermis	d.	subcutaneous tissue

ANS: D PTS: 1 REF: Rev Ques 13

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

a.	areolar connective tissue	c.	stratified squamous epithelium
b.	fibrous connective tissue	d.	simple squamous epithelium

ANS: A PTS: 1 REF: Rev Ques 13

76.The subcutaneous tissue that stores potential energy is:

a.	areolar connective tissue	c.	elastic connective tissue
b.	fibrous connective tissue	d.	adipose tissue

ANS: D PTS: 1 REF: Rev Ques 13

77.Subcutaneous adipose tissue has all of these functions except:

a.	cushioning of some bones	c.	storing excess, or potential, energy
b.	providing some insulation from cold	d.	producing collagen fibers

ANS: D PTS: 1 REF: Rev Ques 13

78.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

ANS: D PTS: 1 REF: Rev Ques 13

79.Adipose tissue that cushions some bones is found in the:

a.	epidermis	c.	subcutaneous tissue
b.	dermis	d.	fibrous connective tissue

ANS: C PTS: 1 REF: Rev Ques 13

80.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.

ANS: B PTS: 1 REF: Rev Ques 13