Question 1

Which of the following is NOT a primary function of the skin?

Accepted Answer

Production of insulin

Question 2

A patient presents with excessive fluid loss after a severe burn. Which function of the skin has been most compromised?

Accepted Answer

Prevention of loss of fluids and electrolytes

Question 3

Which layer of the skin contains blood vessels, nerves, and sweat glands?

Accepted Answer

Dermis

Question 4

Which cell type in the epidermis is primarily responsible for immune defense?

Accepted Answer

Langerhans cells

Question 5

A person exposed to high levels of UV radiation develops increased skin pigmentation. Which process best explains this change?

Accepted Answer

Increased melanin production by melanocytes

Question 6

Which gland is responsible for secreting an oily substance that lubricates hair and skin?

Accepted Answer

Sebaceous gland

Question 7

During intense exercise, which physiological response of the skin helps regulate body temperature?

Accepted Answer

Vasodilation of skin blood vessels

Question 8

Which of the following best describes the difference between thick and thin skin?

Accepted Answer

Thick skin has a thicker epidermis and is found on the palms and soles

Question 9

A patient with a genetic defect in melanin production is most likely to experience which of the following?

Accepted Answer

Increased sensitivity to UV radiation

Question 10

Which of the following equations best represents the relationship between sweat evaporation and heat loss from the skin?

Accepted Answer

$$Q = mL$$

Question 11

A person with damaged Langerhans cells in the skin would most likely have which clinical problem?

Accepted Answer

Increased susceptibility to skin infections

Question 12

Which of the following is a function of the arrector pili muscle?

Accepted Answer

Causing hair to stand up, aiding in thermoregulation

Question 13

Which of the following best explains why elderly individuals are more prone to skin injuries and infections?

Accepted Answer

Thinning of the epidermis and decreased Langerhans cell activity

Question 14

Which of the following statements about eccrine sweat glands is TRUE?

Accepted Answer

They secrete a watery solution directly onto the skin surface

Question 15

A patient with orthostatic hypotension after standing up quickly may have which skin-related physiological change?

Accepted Answer

Excessive vasodilation of skin blood vessels

Question 16

Which of the following best describes the role of melanin in the skin?

Accepted Answer

Absorbs UV radiation to protect underlying tissues

Question 17

Which of the following is a correct sequence of layers from the outermost to the innermost in the skin?

Accepted Answer

Epidermis → Dermis → Hypodermis

Question 18

Which of the following best explains why apocrine sweat glands become active at puberty?

Accepted Answer

They are stimulated by hormonal changes associated with puberty

Question 19

A patient with a mutation that prevents the formation of collagen in the dermis would most likely experience which of the following?

Accepted Answer

Reduced skin strength and elasticity

Question 20

Which of the following best describes the mechanism by which the skin contributes to vitamin D production?

Accepted Answer

UV radiation converts 7-dehydrocholesterol in the skin to cholecalciferol (vitamin D3)

Anatomy: Skin

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