Question 1

Three physiological factors that can affect the color of skin are the volume of blood in dermal vessels, the amount of oxygen carried by the blood, and presence of carotene in the subcutaneous layer.

Accepted Answer

A) True 
 B)False

Question 2

Blood carrying excess oxygen results in cyanosis.

Accepted Answer

A) True 
 B)False

Question 3

Production of __________ and the darkening of the skin results from exposure to ultraviolet light.

Accepted Answer

A)   melatonin
B)   carotene
C)   hemoglobin
D)   cyanin
E)   melaninF) B) and D)
G) A) and B)

Question 4

The fingernails and toenails consist of what material?

Accepted Answer

A)   Keratinized epidermal cells
B)   Collagen
C)   Bone
D)   Elastic fibers embedded with collagen
E)   Pheomelanin and eumelaninF) B) and C)
G) A) and E)

Question 5

The arrector pili of the dermis are composed of __________ muscle tissue.

Accepted Answer

The answer of The arrector pili of the dermis are...

Question 6

The secretion of the sebaceous glands is called sebum.

Accepted Answer

A) True 
 B)False

Question 7

Sweat glands and sebaceous glands are located in the __________.

Accepted Answer

A)   dermis
B)   epidermis
C)   subcutaneous layer
D)   dermal papillaeE) C) and D)
F) All of the above

Question 8

The nerve fibers scattered throughout the dermis are associated with what structures?

Accepted Answer

A)   Hair, oil glands, and sweat glands
B)   Bone, tendons, and muscles
C)   Subcutaneous layer
D)   Muscles, glands, and sensory receptors
E)   Fingernails and toenailsF) None of the above
G) B) and C)

Question 9

When the body temperature rises abovenormal, dermal blood vessels are likely to constrict.

Accepted Answer

A) True 
 B)False

Question 10

Skin cells play an important role in the production of what vitamin?

Accepted Answer

A)   Vitamin A
B)   Niacin
C)   Vitamin C
D)   Vitamin D
E)   Vitamin KF) A) and D)
G) A) and C)

Question 11

Unlike blonde and red hair, dark hair contains an abundance of the pigment called __________.

Accepted Answer

The answer of Unlike blonde and red hair, dark hair...

Question 12

The __________ sweat glands of the skin begin to function at puberty, and respond to emotional stress by increasing their secretion.

Accepted Answer

The answer of The __________ sweat glands of the skin...

Question 13

The stratum __________ is present in thick skin, but is absent from thin skin.

Accepted Answer

A)   lucidum
B)   corneum
C)   spinosum
D)   granulosum
E)   basaleF) A) and E)
G) A) and D)

Question 14

The condition called __________ results from a complete lack of melanin.

Accepted Answer

A)   albinism
B)   jaundice
C)   cyanosis
D)   melanomaE) B) and C)
F) C) and D)

Question 15

A person's skin color is due to pigment located in the __________.

Accepted Answer

A)   epidermis
B)   dermis
C)   subcutaneous layer
D)   adipose tissueE) A) and C)
F) None of the above

Question 16

Carcinomas appear most often in the skin of the neck, face, and scalp.

Accepted Answer

A) True 
 B)False

Question 17

Where are blood vessels located that supply the skin?

Accepted Answer

A)   In only the epidermis
B)   In both the epidermis and the dermis
C)   In only the dermis
D)   In only the subcutaneous layer
E)   In both the subcutaneous layer and the dermisF) D) and E)
G) A) and B)

Question 18

Which statement describes merocrine (eccrine)  sweat glands?

Accepted Answer

A)   Most common in the armpits and groin
B)   Respond primarily to elevated body temperature
C)   Respond primarily to emotional stress
D)   Usually associated with hair follicles
E)   Examples of holocrine glandsF) D) and E)
G) A) and D)

Question 19

How is the presence of melanin helpful to skin cells?

Accepted Answer

A)   It blocks UV radiation from damaging DNA of skin cells.
B)   It acts as a waterproofing material, allowing the skin to be dry and waterproof.
C)   It is able to attack and destroy germs (pathogens)  before they enter the body through the skin.
D)   It provides a source of fuel (carbohydrates)  to the epidermal cells.
E)   It is the source of new skin cells, helping in the repair of wounds.F) A) and B)
G) B) and D)

Question 20

What is the most common cause of cutaneous melanoma?

Accepted Answer

A)   Relatively short exposure to high-intensity sunlight
B)   Prolonged exposure to low-intensity sunlight
C)   Occasional exposure to X rays
D)   Exposure to background radiation
E)   Exposure to mutagenic (mutation-causing)  chemicalsF) All of the above
G) B) and E)

Exam 6: Integumentary System

The fingernails and toenails consist of what material?

Correct AnswerverifiedShow Answer

Which statement describes merocrine (eccrine) sweat glands?

Correct AnswerverifiedShow Answer

Sweat glands and sebaceous glands are located in the __________.

Correct AnswerverifiedShow Answer

Production of __________ and the darkening of the skin results from exposure to ultraviolet light.

Correct AnswerverifiedShow Answer

Three physiological factors that can affect the color of skin are the volume of blood in dermal vessels, the amount of oxygen carried by the blood, and presence of carotene in the subcutaneous layer.

Correct AnswerverifiedShow Answer

The condition called __________ results from a complete lack of melanin.

Correct AnswerverifiedShow Answer

Unlike blonde and red hair, dark hair contains an abundance of the pigment called __________.

Correct AnswerverifiedShow Answer

The stratum __________ is present in thick skin, but is absent from thin skin.

Correct AnswerverifiedShow Answer

The __________ sweat glands of the skin begin to function at puberty, and respond to emotional stress by increasing their secretion.

Correct AnswerverifiedShow Answer

How is the presence of melanin helpful to skin cells?

Correct AnswerverifiedShow Answer

The nerve fibers scattered throughout the dermis are associated with what structures?

Correct AnswerverifiedShow Answer

What is the most common cause of cutaneous melanoma?

Correct AnswerverifiedShow Answer

Blood carrying excess oxygen results in cyanosis.

Correct AnswerverifiedShow Answer

When the body temperature rises abovenormal, dermal blood vessels are likely to constrict.

Correct AnswerverifiedShow Answer

The secretion of the sebaceous glands is called sebum.

Correct AnswerverifiedShow Answer

A person's skin color is due to pigment located in the __________.

Correct AnswerverifiedShow Answer

The arrector pili of the dermis are composed of __________ muscle tissue.

Correct AnswerverifiedShow Answer

Carcinomas appear most often in the skin of the neck, face, and scalp.

Correct AnswerverifiedShow Answer

Skin cells play an important role in the production of what vitamin?

Correct AnswerverifiedShow Answer

Where are blood vessels located that supply the skin?

Correct AnswerverifiedShow Answer

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