Question 1

Which of the following is NOT a general function of the integumentary system?

Accepted Answer

Production of red blood cells

Question 2

A patient presents with a burn that affects the entire epidermis and part of the dermis, resulting in blistering and pain. What classification of burn does this represent?

Accepted Answer

Second-degree burn

Question 3

Which layer of the epidermis is responsible for the continuous production of new keratinocytes through mitosis?

Accepted Answer

Stratum basale

Question 4

What is the primary function of melanin produced by melanocytes in the skin?

Accepted Answer

To shield underlying cells from UV radiation

Question 5

Which type of gland is most active in thermoregulation and secretes a watery sweat directly onto the skin surface?

Accepted Answer

Merocrine (eccrine) sweat gland

Question 6

During cold environmental conditions, which physiological response occurs in the skin to help retain body heat?

Accepted Answer

Vasoconstriction of dermal blood vessels

Question 7

Which layer of the skin contains tactile (Meissner) corpuscles responsible for detecting light touch?

Accepted Answer

Papillary layer of the dermis

Question 8

A person with dark skin pigmentation is likely to have which of the following characteristics?

Accepted Answer

More melanin produced and transferred to keratinocytes

Question 9

Which accessory structure of the skin is responsible for producing oily sebum that lubricates and moisturizes the skin and hair?

Accepted Answer

Sebaceous gland

Question 10

If a patient has burns covering the entire anterior torso and both anterior legs, what percentage of their body surface area is affected according to the Rule of Nines?

Accepted Answer

$$54\%$$

Question 11

Which cell type in the epidermis functions as an immune cell, helping to protect against pathogens?

Accepted Answer

Dendritic (Langerhans) cell

Question 12

Which layer of the skin is primarily responsible for insulation and energy storage due to its abundant adipose tissue?

Accepted Answer

Subcutaneous layer (hypodermis)

Question 13

Which of the following statements about vitamin D synthesis in the skin is correct?

Accepted Answer

It requires exposure to UV radiation

Question 14

Which type of skin cancer is most common and least malignant, typically arising from cells in the stratum basale?

Accepted Answer

Basal cell carcinoma

Question 15

A patient receives a subcutaneous injection. Which layer of the skin is targeted by this procedure?

Accepted Answer

Subcutaneous layer (hypodermis)

Question 16

Which of the following best describes the structure and function of hair?

Accepted Answer

Strands of dead, heavily-keratinized cells that protect and insulate

Question 17

Which layer of the epidermis contains dense granules of keratohyalin and secretes a lipid-rich water repellent?

Accepted Answer

Stratum granulosum

Question 18

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

Accepted Answer

Stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale

Question 19

Which of the following best explains the tradeoff between skin pigmentation and vitamin D production?

Accepted Answer

Higher melanin levels increase vitamin D production in areas with limited solar radiation

Question 20

A patient has a third-degree burn affecting the epidermis, dermis, and subcutaneous layer. Which of the following symptoms is most likely present?

Accepted Answer

Edema, reduced sensation, and extensive damage

The Integumentary System: Structure, Function, and Clinical Relevance

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