Question 1

Eumelanin and pheomelanin are

Accepted Answer

A)  reddish-yellow and brownish-black pigments,respectively.
B)  brownish-black and reddish-yellow pigments,respectively.
C)  types of keratin.
D)  present in excess in a person with albinism.E) C) and D)
F) A) and B)

Question 2

Sweat cools the body by

Accepted Answer

A)  convection.
B)  conduction.
C)  evaporation.
D)  radiation.E) None of the above
F) B) and C)

Question 3

We enjoy sunbathing because it stimulates keratinocytes to release

Accepted Answer

A)  beta endorphin.
B)  collagen.
C)  carotene.
D)  keratin.E) B) and C)
F) None of the above

Question 4

A nail consists of

Accepted Answer

A)  dense connective tissue.
B)  bone.
C)  a nail bed and nail plate.
D)  collagen and elastin.E) A) and B)
F) A) and C)

Question 5

Sebaceous glands secrete

Accepted Answer

A)  fat globules that mix with cellular debris,forming sebum.
B)  hormones.
C)  sweat in the armpits.
D)  mucus.E) B) and D)
F) B) and C)

Question 6

The tough layer of waterproof material that makes up the outermost part of the epidermis is the stratum lucidum.

Accepted Answer

A) True 
 B)False

Question 7

A person exercising vigorously on a hot,humid day may develop

Accepted Answer

A)  fatigue and dizziness.
B)  heat exhaustion.
C)  headache,muscle cramps,and nausea.
D)  all of the above.E) A) and B)
F) None of the above

Question 8

The skin is one of the larger organs in the body by weight.

Accepted Answer

A) True 
 B)False

Question 9

Gray hair is

Accepted Answer

A)  caused by a pigment,pseudomelanin.
B)  a mixture of red and brown hairs.
C)  a mixture of pigmented and unpigmented hairs.
D)  a form of albinism.E) C) and D)
F) B) and C)

Question 10

As cells are pushed from the deeper portion of the epidermis toward the surface,

Accepted Answer

A)  they divide continually.
B)  their supply of nutrients improves.
C)  they die.
D)  they become dermal cells.E) None of the above
F) B) and C)

Question 11

The major blood vessels that supply the skin are in the

Accepted Answer

A)  epidermis.
B)  basement membrane.
C)  dermis.
D)  subcutaneous layer.E) B) and D)
F) B) and C)

Question 12

The epidermis is about ___ mm thick and the dermis is about ___ mm thick.

Accepted Answer

A)  1.0 to 2.0;0.07 to 0.12
B)  0.07 to 0.12;1.0 to 2.0
C)  3.0 to 4.0;5.0 to 6.0
D)  0.01 to 0.10;0.10 to 1.0E) None of the above
F) C) and D)

Question 13

Epidermis is ________________,whereas dermis is ________________.

Accepted Answer

A)  the innermost layer of the skin;under the epidermis
B)  largely composed of dense connective tissue;composed of stratified squamous epithelial tissue
C)  the outermost layer of the skin;composed of stratified squamous epithelial tissue
D)  composed of stratified squamous epithelial tissue;composed of connective tissue,smooth muscle,and nerve cell processesE) C) and D)
F) B) and D)

Question 14

The melanocytes in very dark skin

Accepted Answer

A)  are more abundant than they are in light skin.
B)  contain single,large,pigment granules.
C)  lack pigment but shrivel up and turn black.
D)  contain many small pigment granules.E) B) and C)
F) All of the above

Question 15

Which of the following happens first after a scab forms?

Accepted Answer

A)  phagocytic cells remove dead material.
B)  the scab sloughs off.
C)  fibroblasts from the wound edge form new collagenous fibers.
D)  blood vessels send out new branches under the scab.E) A) and B)
F) C) and D)

Question 16

Accessory structures of the skin originate from the

Accepted Answer

A)  epidermis.
B)  basement membrane.
C)  dermis.
D)  subcutaneous layer.E) A) and B)
F) A) and C)

Question 17

Inflammation

Accepted Answer

A)  is a type of infection.
B)  is a result of exposure to very low temperatures.
C)  is a normal response to stress or injury.
D)  is an abnormal response to injury or stress.E) None of the above
F) A) and D)

Question 18

The nail plate is produced by

Accepted Answer

A)  bone cells.
B)  fibroblasts.
C)  melanocytes.
D)  specialized epithelial cells.E) A) and C)
F) C) and D)

Question 19

The outermost layer of the epidermis is the stratum basale and the innermost layer is the stratum corneum.

Accepted Answer

A) True 
 B)False

Question 20

A woman undergoes coronary bypass surgery,in which a blood vessel from her leg is moved to her heart,where it supplements the blood supply following a heart attack.This procedure is a(n)

Accepted Answer

A)  xenograft.
B)  autograft.
C)  allograft.
D)  isograft.E) B) and D)
F) B) and C)

Exam 6: Skin and the Integumentary System

Eumelanin and pheomelanin are

Correct AnswerverifiedShow Answer

The tough layer of waterproof material that makes up the outermost part of the epidermis is the stratum lucidum.

Correct AnswerverifiedShow Answer

Inflammation

Correct AnswerverifiedShow Answer

The skin is one of the larger organs in the body by weight.

Correct AnswerverifiedShow Answer

The major blood vessels that supply the skin are in the

Correct AnswerverifiedShow Answer

Accessory structures of the skin originate from the

Correct AnswerverifiedShow Answer

Epidermis is ________________,whereas dermis is ________________.

Correct AnswerverifiedShow Answer

Which of the following happens first after a scab forms?

Correct AnswerverifiedShow Answer

A woman undergoes coronary bypass surgery,in which a blood vessel from her leg is moved to her heart,where it supplements the blood supply following a heart attack.This procedure is a(n)

Correct AnswerverifiedShow Answer

Sweat cools the body by

Correct AnswerverifiedShow Answer

The epidermis is about ___ mm thick and the dermis is about ___ mm thick.

Correct AnswerverifiedShow Answer

As cells are pushed from the deeper portion of the epidermis toward the surface,

Correct AnswerverifiedShow Answer

The outermost layer of the epidermis is the stratum basale and the innermost layer is the stratum corneum.

Correct AnswerverifiedShow Answer

Gray hair is

Correct AnswerverifiedShow Answer

Sebaceous glands secrete

Correct AnswerverifiedShow Answer

The nail plate is produced by

Correct AnswerverifiedShow Answer

A nail consists of

Correct AnswerverifiedShow Answer

A person exercising vigorously on a hot,humid day may develop

Correct AnswerverifiedShow Answer

We enjoy sunbathing because it stimulates keratinocytes to release

Correct AnswerverifiedShow Answer

The melanocytes in very dark skin

Correct AnswerverifiedShow Answer

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Epidermis is ,whereas dermis is .

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The epidermis is about _ mm thick and the dermis is about _ mm thick.

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