Understanding Anatomy and Physiology A Visual Auditory Interactive Approach 2nd Edition By Thompson – Test Bank

Complete Test Bank With Answers

Sample Questions Posted Below

Chapter 5: Integumentary System

MATCHING

Match each item to the statement listed below.

1.Outer layer of epidermis

2.Inner layer of the skin

3.Protects nucleus from sun damage

4.Secretes sweat

5.Outermost layer of the skin

6.Inner layer of epidermis

7.A fibrous protein

8.Helps bind layers of skin together

1.ANS:FPTS:1DIF:EREF:72

KEY:REMEMBERING

2.ANS:CPTS:1DIF:EREF:71

KEY:REMEMBERING

3.ANS:GPTS:1DIF:EREF:73

KEY:REMEMBERING

4.ANS:JPTS:1DIF:EREF:77

KEY:REMEMBERING

5.ANS:APTS:1DIF:EREF:71

KEY:REMEMBERING

6.ANS:DPTS:1DIF:EREF:72

KEY:REMEMBERING

7.ANS:EPTS:1DIF:EREF:72

KEY:REMEMBERING

8.ANS:HPTS:1DIF:EREF:71

KEY:REMEMBERING

Match each item to its definition below.

9.Yellow discoloration of skin

10.Pale skin

11.Bluish, black, or yellowish mark on the skin

12.Blue tint to the skin

13.Abnormal redness of the skin

14.Extremely pale skin, white hair, and pink eyes

9.ANS:BPTS:1DIF:EREF:73

KEY:REMEMBERING

10.ANS:FPTS:1DIF:EREF:73

KEY:REMEMBERING

11.ANS:GPTS:1DIF:EREF:73

KEY:REMEMBERING

12.ANS:APTS:1DIF:EREF:73

KEY:REMEMBERING

13.ANS:EPTS:1DIF:EREF:73

KEY:REMEMBERING

14.ANS:DPTS:1DIF:EREF:73

KEY:REMEMBERING

Match each item to the statement or sentence listed below. Items may be used more than once.

15.Cancer arising from epithelial cells

16.Cancer with highest risk for death

17.Cancer that rarely spreads

18.Cancer with a pearly-looking outer ring

19.Cancer that can start out as a mole

20.Cancer that looks red and scaly

15.ANS:BPTS:1DIF:MREF:79

KEY:UNDERSTANDING

16.ANS:CPTS:1DIF:MREF:79

KEY:UNDERSTANDING

17.ANS:APTS:1DIF:MREF:79

KEY:UNDERSTANDING

18.ANS:APTS:1DIF:MREF:79

KEY:UNDERSTANDING

19.ANS:CPTS:1DIF:MREF:79

KEY:UNDERSTANDING

20.ANS:BPTS:1DIF:MREF:79

KEY:UNDERSTANDING

MULTIPLE CHOICE

21.New skin cells are produced in the

ANS: A

New skin cells are produced in the stratum basale, which is the innermost layer of the epidermis. The cutaneous membrane is another name for skin, which would include all layers. The stratum corneum is the outer layer of the epidermis and is composed of dead cells. The dermis lies underneath the epidermis.

PTS: 1 DIF: E REF: 72 KEY: REMEMBERING

22.Which skin layer contains nerve endings, hair follicles, sebaceous glands, and sweat glands?

ANS: A

The dermis, or inner layer, contains blood vessels, nerve endings, hair follicles, sebaceous glands, and sweat glands. The epidermis does not contain these structures. The hypodermis contains adipose and connective tissue. The endodermis is a structure found in plants.

PTS: 1 DIF: E REF: 71 KEY: REMEMBERING

23.Which skin layer receives oxygen and nutrients by diffusion from the skin layer beneath it?

ANS: B

The epidermis—the skin’s outermost layer—receives oxygen and nutrients from the dermis, the skin layer directly beneath. The hypodermis exists beneath the dermis. The cutaneous membrane is the skin itself, which consists of both the epidermis and the dermis. It has an abundant blood supply in the dermal layer.

PTS: 1 DIF: E REF: 71 KEY: REMEMBERING

24.The hypodermis is

ANS: A

The hypodermis consists of areolar and adipose tissue, making it a connective tissue. It binds skin to underlying tissue. It is not epithelial, muscle, or nervous tissue, and it does not protect or support the dermis or sense pain, temperature, and other sensations.

PTS: 1 DIF: M REF: 71 KEY: UNDERSTANDING

25.What are the primary components of the dermis?

ANS: A

The dermis is composed primarily of collagen as well as reticular and elastic fibers. Although the dermis also contains the other cells and structures listed, it is made up of primarily of these fibers.

PTS: 1 DIF: M REF: 71 KEY: UNDERSTANDING

26.The dermis contains which of the following structures?

ANS: G

The dermis contains exocrine glands (sebaceous, apocrine, and eccrine glands), hair follicles, and blood vessels. The stratum corneum is a layer of the epidermis.

PTS: 1 DIF: E REF: 71 KEY: REMEMBERING

27.Which statement best describes the life cycle of an epidermal cell?

ANS: D

Epithelial cells in the stratum basale (the deepest layer of the epidermis) continually divide to form new cells. The new cells are pushed toward the outer surface as new cells form below. They pass through several layers, during which time their cytoplasm and nuclei are replaced with keratin. The cells are dead by the time they reach the stratum corneum and are eventually sloughed off through daily wear and tear. Other answers misidentify the correct layer of epidermis or do not provide sufficient information.

PTS: 1 DIF: M REF: 72 KEY: ANALYZING

28.Which statement best explains why the stratum corneum resists abrasions?

ANS: B

The stratum corneum consists of up to 30 layers of toughened, dead cells, which makes it abrasion resistant. The fact that the cells are dead is only part of the reason the stratum corneum resists abrasions. Melanin does not protect against abrasion. The absence of a blood supply does not make the stratum corneum resistant to abrasion.

PTS: 1 DIF: M REF: 72 KEY: UNDERSTANDING

29.What is the purpose of melanin?

ANS: B

Melanin protects the DNA contained in the nucleus of skin cells from the ultraviolet radiation in sunlight, not other underlying structures. Sun exposure does cause skin to toughen over time, but this is not because of melanin. Melanin does not provide nutrients to cells.

PTS: 1 DIF: M REF: 73 KEY: UNDERSTANDING

30.Which statement about melanin is accurate?

ANS: D

Melanin, which is released by melanocytes in response to sun exposure, is carried into the cell by keratinocytes where it forms a protective cap over the cell’s nucleus. Melanin does not darken in response to sun exposure; skin darkens because of an increased production of melanin. Melanocytes have projections that reach between cells, but they do not surround cells. Keratin, not melanin, replaces a cell’s cytoplasm.

PTS: 1 DIF: D REF: 73 KEY: ANALYZING

31.What causes albinism?

ANS: D

Albinism results from a genetic lack of melanin. The other answers cause changes in skin color but are not responsible for albinism.

PTS: 1 DIF: M REF: 73 KEY: UNDERSTANDING

32.How does the skin help regulate body temperature?

ANS: A

Nerves in the dermis prompt blood vessels to dilate or constrict, which helps regulate heat loss. The epidermis prevents water absorption but is not a barrier to water loss from sweat. The dermis does not expand or contract to conserve or expel heat. The epidermis does not contain blood vessels.

PTS: 1 DIF: E REF: 74 KEY: UNDERSTANDING

33.Which function of the skin keeps bacteria from entering the body?

ANS: C

Skin protects the body by blocking microorganisms and many harmful chemicals. It also secretes a surface film that blocks toxins and inhibits the growth of microorganisms. The skin functions as a barrier by blocking ultraviolet radiation, preventing dehydration by regulating fluid loss and preventing the body from absorbing too much water. Sensory perception does not play a role in preventing microorganisms from entering the body. The outer layer of skin does not filter microorganisms.

PTS: 1 DIF: M REF: 74 KEY: ANALYZING

34.Which structure nourishes each hair?

ANS: C

The papilla is a structure with blood vessels located at the base of each hair that nourishes it. The root, follicle, or arrector pili do not provide nourishment.

PTS: 1 DIF: M REF: 75 KEY: UNDERSTANDING

35.Which structure causes the hair to “stand on end”?

ANS: A

The arrector pili is a bundle of smooth muscle that contracts in response to stimuli such as cold air or extreme emotion; when it does, it pushes the hair into a more upright position. Neither the root, follicle, nor shaft cause this reaction.

PTS: 1 DIF: M REF: 75 KEY: UNDERSTANDING

36.What tough, fibrous protein is found in dead cells of the hair, nails, and outer layer of skin?

ANS: D

Keratin is the tough protein that replaces the cytoplasm and nucleus of hair, nail, and skin cells before they die. Pheomelanin is red-colored melanin, which is a pigment. Fibrin is a blood protein involved in clotting. Collagen is a protein found in connective tissue.

PTS: 1 DIF: M REF: 75-76 KEY: UNDERSTANDING

37.Clubbing of the nails is a sign of (a)

ANS: C

Clubbing of the nails is a sign of lung disease. Digestive disorders may cause changes in nail appearance but do not cause clubbing. Anemia may cause very pale nail beds. Melanoma may cause dark lines under the nails of people with light-colored skin.

PTS: 1 DIF: M REF: 74 KEY: UNDERSTANDING

38.What skin change associated with aging affects the maintenance of body temperature during hot weather?

ANS: B

Decline in number and output of sweat glands can seriously interfere with an older person’s ability to cool down. This is why many older individuals are prone to developing heatstroke in the summer. Slowed skin cell production results in slower healing times, which could increase the risk for infection; however, this is an indirect, secondary risk. Localized proliferation of melanocytes causes brown spots on the skin, which are harmless. Decreased collagen and elastin causes wrinkles.

PTS: 1 DIF: M REF: 76 KEY: ANALYZING

39.Eccrine glands

ANS: B

Eccrine glands produce sweat and are located throughout the body. Although these glands can be found on the face and head, that is not their primary location. Eccrine glands do not secrete sebum.

PTS: 1 DIF: M REF: 77 KEY: UNDERSTANDING

40.Which statement about body odor is accurate?

ANS: D

Body odor is the result of the breakdown of substances in sweat by bacteria. It is not a natural occurrence, nor does it result from foods or sebum.

PTS: 1 DIF: M REF: 77 KEY: UNDERSTANDING

41.Approximately how much fluid does the body lose per day in insensible perspiration?

ANS: B

The average amount of fluid loss from insensible perspiration is 500 mL. Heat, exercise, fever, and other conditions can dramatically increase that amount.

PTS: 1 DIF: E REF: 77 KEY: REMEMBERING

42.Which glands have the most important role in maintaining constant core temperature?

ANS: C PTS: 1 DIF: M REF: 77

KEY:UNDERSTANDING

43.A burn that involves only the epidermis is classified as

ANS: A

A burn involving only the epidermis is called a first-degree burn.

PTS: 1 DIF: E REF: 78 KEY: UNDERSTANDING

44.Why are some full-thickness burns not painful initially?

ANS: D

Full-thickness burns may destroy nerve endings in the dermis, which prevents sensory input from reaching the brain. Full-thickness burns involve much more than just the epidermis, which does contain nerve endings. People experience considerable pain as the burn injury occurs. Bone does contain nerve endings.

PTS: 1 DIF: M REF: 78 KEY: UNDERSTANDING

45.A young woman sustains second- and third-degree burns on the front of both legs from the thigh to the ankle and second-degree burns on her right arm. Using the Rule of Nines, what percentage of her body has been burned?

ANS: B

The front of each leg is considered 9 percent and the front of each arm is 4.5 percent; therefore, burns over both legs and one arm totals 22.5 percent of her body.

PTS: 1 DIF: M REF: 78 KEY: UNDERSTANDING

TRUE/FALSE

46.The stratum basale produces new skin cells that migrate to the stratum corneum to replace skin cells that have sloughed off.

ANS: F

New skin cells are produced in the stratum basale, but they push older cells up. As they get pushed up, they undergo changes and become the stratum corneum.

PTS: 1 DIF: M REF: 72 KEY: UNDERSTANDING

47.All skin cells in the epidermis are dead.

ANS: F

The skin cells in the outer layer of the epidermis are dead, but the cells in the lowest level, the stratum basale, are living.

PTS: 1 DIF: M REF: 72 KEY: UNDERSTANDING

48.Because the skin acts as a barrier, medications are not readily absorbed.

ANS: F

Although the skin acts as a barrier, it can also absorb many chemicals. This makes skin a possible route for medication administration in the form of lotions, gels, or adhesive patches.

PTS: 1 DIF: M REF: 74 KEY: REMEMBERING

49.Apocrine glands contain a duct that leads to a hair follicle.

ANS: T

Apocrine glands are sweat glands found in the armpit and groin, and do contain a duct that leads to a hair follicle.

PTS: 1 DIF: E REF: 77 KEY: REMEMBERING