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| 1 | |
The fibrous protein ____________ imparts the stratum corneum with strength and water resistance. |
| | A) | collagen |
| | B) | elastin |
| | C) | keratin |
| | D) | eleidin |
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| 2 | |
If you stepped on a nail, the second epidermal layer it would penetrate is the stratum |
| | A) | lucidum |
| | B) | corneum |
| | C) | spinosum |
| | D) | granulosum |
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| 3 | |
The most superficial sensory receptors in the skin are called |
| | A) | Merkel cells |
| | B) | epidermal dendritic cells |
| | C) | tactile corpuscles |
| | D) | lamellated corpuscles |
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| 4 | |
A person with defective ____________ would be particularly at risk for both infection and cancer in the deeper epidermal layers. |
| | A) | stem cells |
| | B) | Langerhans cells |
| | C) | Merkel cells |
| | D) | melanocytes |
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| 5 | |
The connective tissue component of the cutaneous membrane is otherwise known as the ____________. |
| | A) | stratum corneum |
| | B) | stratum basale |
| | C) | epidermis |
| | D) | dermis |
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| 6 | |
Which of the following is false? Ceruminous glands |
| | A) | produce earwax in the external ear canal |
| | B) | are modified sebaceous glands |
| | C) | are much less numerous than eccrine glands |
| | D) | are related to glands that help to regulate body temperature |
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| 7 | |
A result of skin exposure to UV radiation that actually promotes good health is |
| | A) | synthesis of cholecalciferol |
| | B) | decreased melanocyte activity |
| | C) | mild sunburn to promote replacement of old epidermal cells |
| | D) | a deep bronze tan |
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| 8 | |
Apocrine sweat glands, variously modified, serve the reproductive system through their secretion of |
| | A) | sex hormones |
| | B) | milk and pheromones |
| | C) | both a and b |
| | D) | neither a nor b |
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| 9 | |
Of the following, the least specific skin problem is |
| | A) | psoriasis |
| | B) | folliculitis |
| | C) | impetigo |
| | D) | pruritis |
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| 10 | |
All of the following conditions directly involve sebaceous glands except |
| | A) | urticaria |
| | B) | acne |
| | C) | furuncles |
| | D) | folliculitis |
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| 11 | |
The following statements all characterize basal cell carcinomas. Which one does not apply equally well to other forms of skin cancer? |
| | A) | they originate deep in the epidermis |
| | B) | they seldom metastasize to other tissues |
| | C) | they are strongly linked to previous damage by UV radiation |
| | D) | they are the result of uncontrolled mitosis |
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| 12 | |
Which of the following nail disorders might also be a symptom of kidney failure? |
| | A) | onychomycosis |
| | B) | yellow nail syndrome |
| | C) | half-and-half |
| | D) | vertical ridging |
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| 13 | |
Second-degree burns |
| | A) | may cause slight scarring |
| | B) | involve the epidermis and part of the dermis |
| | C) | cause blistering beneath the epidermis |
| | D) | all of the above |
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| 14 | |
The skin turns red when a fair-skinned person blushes because |
| | A) | carotenes become more prominent as the skin's temperature rises |
| | B) | melanocytes are temporarily activated |
| | C) | blood flow to the skin increases |
| | D) | blood flow to the skin decreases |
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| 15 | |
Generally, a "bald" man has not really lost his hair but rather has replaced his ____________ hairs with ____________ hairs. |
| | A) | vellus; lanugo |
| | B) | terminal; vellus |
| | C) | terminal; lanugo |
| | D) | lanugo; terminal |
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| 16 | |
The prevalence of acne during teenage years indicates that |
| | A) | sex hormones trigger increased activity in sebaceous glands as well as other tissues |
| | B) | teenagers do not care for their skin as well as older or younger individuals |
| | C) | both of the above |
| | D) | neither a nor b is correct |
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| 17 | |
Systemic acne treatments (taken internally) potentially have much more widespread, sometimes unanticipated, effects than topical treatments. For example, ____________ and other systemic retinoids may be powerful teratogens. |
| | A) | Retin-A |
| | B) | Accutane |
| | C) | salicylic acid |
| | D) | doxycycline |
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| 18 | |
Which type of acne lesion would be least responsive to antibiotic treatment? |
| | A) | comedo |
| | B) | papule |
| | C) | nodule |
| | D) | cyst |
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| 19 | |
In which layers of the epidermis would you find mitotically active cells? |
| | A) | strata basale and spinosum |
| | B) | strata granulosum and corneum |
| | C) | strata granulosum and lucidum |
| | D) | strata lucidum and corneum |
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| 20 | |
Lanolin, refined from the lipid secretions of sheep skin, is often used to augment humans' holocrine skin secretion called |
| | A) | cerumen |
| | B) | sebum |
| | C) | sweat |
| | D) | none of the above |
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| 21 | |
Which of the following are benign tumors that affect the appearance of the skin? |
| | A) | capillary hemangiomas |
| | B) | port-wine stains |
| | C) | nevi |
| | D) | all of the above |
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| 22 | |
A genetic mutation preventing the production of the enzyme tyrosinase would result in the condition known as |
| | A) | eczema |
| | B) | alopecia |
| | C) | albinism |
| | D) | hemophilia |
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| 23 | |
The most dangerous kind of skin cancer originates from |
| | A) | melanocytes in an existing mole |
| | B) | keratinocytes in the stratum basale |
| | C) | keratinocytes in the stratum spinosum |
| | D) | none of the above |
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| 24 | |
Which skin color abnormalities result from alterations in blood contents rather than blood flow? |
| | A) | pallor and erythema |
| | B) | cyanosis and jaundice |
| | C) | both a and b |
| | D) | neither a nor b |
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| 25 | |
A victim of extensive third-degree burns is at high risk not only from bacterial infection but also potentially lethal |
| | A) | erythema |
| | B) | scarring |
| | C) | dehydration |
| | D) | all of the above |
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