Question 1

Which layer of the skin is primarily responsible for providing strength, elasticity, and housing most of the skin’s blood vessels and nerves?

Accepted Answer

Reticular layer of the dermis

Question 2

A patient presents with a bluish tint to their skin (cyanosis). Which of the following best explains the physiological cause of this condition?

Accepted Answer

Low oxygenation of hemoglobin

Question 3

Which of the following cells in the epidermis is primarily responsible for activating the immune system by acting as a macrophage?

Accepted Answer

Dendritic (Langerhans) cell

Question 4

A surgeon plans to make an incision on a patient’s back. According to the concept of cleavage (tension) lines, which of the following will promote optimal healing?

Accepted Answer

Making the incision parallel to cleavage lines

Question 5

Which of the following best describes the function of the arrector pili muscle?

Accepted Answer

Contracts to cause hair to stand upright, producing 'goose bumps'

Question 6

A patient with a severe burn is at immediate risk for which of the following complications?

Accepted Answer

Dehydration and electrolyte imbalance

Question 7

Which pigment is produced in the skin and is responsible for protecting keratinocyte DNA from UV damage?

Accepted Answer

Melanin

Question 8

A 25-year-old woman presents with excessive hair growth on her face and chest. Laboratory tests reveal elevated androgen levels. Which condition is most likely responsible for her symptoms?

Accepted Answer

Polycystic ovary syndrome (PCOS)

Question 9

Which of the following best describes the secretion of eccrine (merocrine) sweat glands?

Accepted Answer

A watery solution containing salts, vitamin C, antibodies, and metabolic wastes

Question 10

A patient presents with yellowing of the skin and sclera. Which underlying condition is most likely responsible for this finding?

Accepted Answer

Liver disorder

Question 11

Which of the following layers is only present in thick skin, such as the palms of the hands and soles of the feet?

Accepted Answer

Stratum lucidum

Question 12

A patient has a third-degree burn on their arm. Which of the following best describes the characteristics of this burn?

Accepted Answer

Gray-white, cherry red, or blackened skin with no pain due to nerve destruction

Question 13

Which of the following is a function of the hypodermis (subcutaneous layer)?

Accepted Answer

Anchoring the skin to underlying muscles and providing insulation

Question 14

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

Accepted Answer

Decreased number of melanocytes and dendritic cells

Question 15

A patient presents with a spoon-shaped concavity of the nails (koilonychia). Which underlying deficiency is most likely responsible?

Accepted Answer

Iron deficiency

Question 16

Which of the following best describes the Rule of Nines in burn assessment?

Accepted Answer

A method to estimate the percentage of body surface area burned

Question 17

Which of the following is a characteristic of basal cell carcinoma?

Accepted Answer

Originates from keratinocytes in the stratum basale and rarely metastasizes

Question 18

Which of the following best describes the function of Meissner’s (tactile) corpuscles found in the papillary layer of the dermis?

Accepted Answer

Detect light touch and texture

Question 19

A patient is diagnosed with hirsutism. Which of the following best explains the underlying cause?

Accepted Answer

Excessive androgen production, often due to ovarian or adrenal tumors

Question 20

Which of the following best describes the process by which melanin protects the skin from UV radiation?

Accepted Answer

Melanin absorbs UV radiation and prevents it from reaching the DNA in keratinocytes

Chapter 5: The Integumentary System – Structure, Function, and Clinical Aspects

Study Guide - Practice Questions

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