Question 1

When exposed to ultraviolet light, keratinocytes convert a steroid precursor into ________, a molecule that is crucial for regulation of calcium levels.

Accepted Answer

A)   calcitriol
B)   cholecalciferol
C)   calcitonin
D)   creatine
E)   phosphorusF) A) and B)
G) B) and C)

Question 2

Severe injuries and burns to the skin result in scars that are

Accepted Answer

A)   produced by stratum basale keratinocytes, which effectively bind damaged skin parts together.
B)   produced by chondrocytes and made mainly of desmosomes.
C)   produced by fibroblasts and made mainly of collagen.
D)   made by macrophages, which produce a dense granulation tissue.
E)   fully functional regenerations.F) C) and D)
G) B) and C)

Question 3

The epidermal ridges and dermal ________ increase the area of contact between the epidermis and dermis to help connect these layers.

Accepted Answer

The answer of The epidermal ridges and dermal ________ increase...

Question 4

To speed healing from surgery, incisions should be placed ________ to lines of cleavage.

Accepted Answer

A)   parallel
B)   perpendicularC) A) and B)
D) undefined A

Question 5

The dermis is derived from the germ layer known as ________.

Accepted Answer

The answer of The dermis is derived from the germ...

Question 6

Carotene, a pigment that contributes to skin color, is acquired in the body by eating various yellow-orange vegetables.

Accepted Answer

A) True 
 B)False  True

Question 7

While most of the cells in a hair are dead, the living epithelial cells are found in

Accepted Answer

A)   the cuticle of the hair shaft.
B)   the cortex of the hair shaft.
C)   the hair bulb.
D)   the hyponychium.E) B) and D)
F) All of the above

Question 8

-Which number indicates the arrector pili muscle?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) A) and B)
G) D) and E)

Question 9

One of the components of sweat is the nitrogenous waste urea.

Accepted Answer

A) True 
 B)False

Question 10

Which is not a function of the integument?

Accepted Answer

A)   Protection
B)   Water loss prevention
C)   Temperature regulation
D)   Synthesis of cholecalciferol (vitamin D precursor) 
E)   No exceptions; all are functions of the integumentF) A) and E)
G) B) and E)

Question 11

Fine hair called ________, which is unpigmented or lightly pigmented, is the primary human hair and is found on the upper and lower limbs.

Accepted Answer

A)   terminal
B)   lanugo
C)   vellus
D)   cuticle
E)   phalanxF) All of the above
G) A) and B)

Question 12

What type of epithelium is found in the epidermis?

Accepted Answer

A)   Keratinized stratified squamous
B)   Nonkeratinized stratified squamous
C)   Keratinized stratified cuboidal
D)   Nonkeratinized stratitified cuboidal
E)   TransitionalF) A) and B)
G) All of the above

Question 13

Which type of hair forms the beard on the faces of males?

Accepted Answer

A)   Terminal
B)   Lanugo
C)   Vellus
D)   Nonpigmented
E)   PilusF) A) and D)
G) B) and D)

Question 14

Skin is very tough but extremely sensitive. Explain how some structures in the skin allow it to withstand a vigorous pinch and tug, while other structures allow it to detect the presence of a mosquito on your arm.

Accepted Answer

Skin's toughness comes from the durabili...

Question 15

Describe the changes in the skin that occur with aging. Although skin cancers can occur at any age, why might skin cancers have a higher incidence in the elderly?

Accepted Answer

Among other effects of aging, skin becomes thinner and regeneration slows. Increased cancer risk might in part relate to greater duration of sun exposure and also decreased numbers of epidermal dendritic cells.

Question 16

The growth rate for a scalp hair is about ________ per day for 1.5 to 7 years, and then the hair becomes dormant.

Accepted Answer

A)   1.3 mm
B)   1.3 cm
C)   1/30 mm
D)   1/3 mm
E)   3.1 mmF) A) and D)
G) A) and C)

Question 17

Sebum has bactericidal properties.

Accepted Answer

A) True 
 B)False

Question 18

-Which number indicates a dermal papilla?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) None of the above
G) A) and E)

Question 19

The hypodermis is rich in adipose, and thus its functions include

Accepted Answer

A)   frequent regeneration, structural support, and defense against infection.
B)   maintenance of boundaries and sensation of stimuli.
C)   water regulation and vitamin synthesis.
D)   organ protection, energy storage, and thermal insulation.E) B) and C)
F) None of the above

Question 20

Apocrine sweat glands secrete sweat by having the apical portion of epithelial cells pinch off.

Accepted Answer

A) True 
 B)False

Exam 6: Integumentary System

When exposed to ultraviolet light, keratinocytes convert a steroid precursor into ________, a molecule that is crucial for regulation of calcium levels.

Correct AnswerverifiedShow Answer

Severe injuries and burns to the skin result in scars that are

Correct AnswerverifiedShow Answer

The epidermal ridges and dermal ________ increase the area of contact between the epidermis and dermis to help connect these layers.

Correct AnswerverifiedShow Answer

To speed healing from surgery, incisions should be placed ________ to lines of cleavage.

Correct AnswerverifiedA

The dermis is derived from the germ layer known as ________.

Correct AnswerverifiedShow Answer

Carotene, a pigment that contributes to skin color, is acquired in the body by eating various yellow-orange vegetables.

Correct AnswerverifiedTrue

While most of the cells in a hair are dead, the living epithelial cells are found in

Correct AnswerverifiedShow Answer

-Which number indicates the arrector pili muscle?

Correct AnswerverifiedShow Answer

One of the components of sweat is the nitrogenous waste urea.

Correct AnswerverifiedShow Answer

Which is not a function of the integument?

Correct AnswerverifiedShow Answer

Fine hair called ________, which is unpigmented or lightly pigmented, is the primary human hair and is found on the upper and lower limbs.

Correct AnswerverifiedShow Answer

What type of epithelium is found in the epidermis?

Correct AnswerverifiedShow Answer

Which type of hair forms the beard on the faces of males?

Correct AnswerverifiedShow Answer

Skin is very tough but extremely sensitive. Explain how some structures in the skin allow it to withstand a vigorous pinch and tug, while other structures allow it to detect the presence of a mosquito on your arm.

Correct AnswerverifiedSkin's toughness comes from the durabili...View AnswerShow Answer

Describe the changes in the skin that occur with aging. Although skin cancers can occur at any age, why might skin cancers have a higher incidence in the elderly?

Correct AnswerverifiedAmong other effects of aging, skin becomes thinner and regeneration slows. Increased cancer risk might in part relate to greater duration of sun exposure and also decreased numbers of epidermal dendritic cells.

The growth rate for a scalp hair is about ________ per day for 1.5 to 7 years, and then the hair becomes dormant.

Correct AnswerverifiedShow Answer

Sebum has bactericidal properties.

Correct AnswerverifiedShow Answer

-Which number indicates a dermal papilla?

Correct AnswerverifiedShow Answer

The hypodermis is rich in adipose, and thus its functions include

Correct AnswerverifiedShow Answer

Apocrine sweat glands secrete sweat by having the apical portion of epithelial cells pinch off.

Correct AnswerverifiedShow Answer

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A

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True

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Skin's toughness comes from the durabili...
View Answer

Correct Answer
verified
Among other effects of aging, skin becomes thinner and regeneration slows. Increased cancer risk might in part relate to greater duration of sun exposure and also decreased numbers of epidermal dendritic cells.

Correct Answer
verified

Correct Answer
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Correct Answer
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