Question 1

Which layer of the skin is primarily responsible for providing strength and resistance to mechanical stress due to its composition of keratinized cells?

Accepted Answer

Epidermis

Question 2

A patient presents with a burn that is painful, blistered, and involves both the epidermis and part of the dermis. Which type of burn does this describe?

Accepted Answer

Second-degree burn

Question 3

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

Accepted Answer

Production of red blood cells

Question 4

During thermoregulation, what is the effector response when body temperature rises above normal?

Accepted Answer

Stimulation of sweating and dilation of blood vessels

Question 5

Which cell type in the epidermis is responsible for producing melanin and protecting DNA from UV radiation?

Accepted Answer

Melanocyte

Question 6

A patient with albinism is at increased risk for DNA damage in keratinocytes. What is the underlying cause?

Accepted Answer

Lack of tyrosinase enzyme in melanocytes

Question 7

Which layer of the epidermis contains stem cells that are mitotically active and responsible for producing new keratinocytes?

Accepted Answer

Stratum basale

Question 8

A person develops a mole (nevus) on their skin. What is the primary cellular event responsible for this?

Accepted Answer

Local proliferation of melanocytes

Question 9

Which type of sweat gland is most prevalent and primarily responsible for thermoregulation?

Accepted Answer

Eccrine sweat gland

Question 10

A patient presents with a bluish tint to their skin and nail beds. Which condition is most likely responsible?

Accepted Answer

Cyanosis

Question 11

Which structure in the dermis is responsible for detecting deep pressure and vibration?

Accepted Answer

Lamellated (Pacinian) corpuscle

Question 12

A patient has a burn covering the entire right lower limb. Using the Rule of Nines, what percentage of the body surface area is affected?

Accepted Answer

$$18\%$$

Question 13

Which pigment is responsible for the yellow-orange coloration of the skin, especially visible in thick skin?

Accepted Answer

Carotene

Question 14

Which type of secretion involves the rupture of the gland cell, releasing its contents and cell fragments into the duct?

Accepted Answer

Holocrine secretion

Question 15

A patient is diagnosed with basal cell carcinoma. From which layer of the epidermis does this cancer arise?

Accepted Answer

Stratum basale

Question 16

Which of the following best describes the ABCDE rule for identifying malignant melanoma?

Accepted Answer

Asymmetry, Border irregularity, Color variation, Diameter \u003e 6 mm, Evolving

Question 17

Which layer of the dermis contains the dermal papillae and is responsible for providing blood supply to the epidermis?

Accepted Answer

Papillary layer

Question 18

A patient with acne vulgaris has an accumulation of sebum and dead cells in which type of gland?

Accepted Answer

Sebaceous gland

Question 19

Which of the following best explains why individuals with darker skin living near the equator have lower rates of vitamin D synthesis?

Accepted Answer

Increased melanin decreases vitamin D synthesis to prevent excess production

Question 20

A patient presents with a scaly plaque on the head that bleeds and ulcerates. Which skin cancer is most likely?

Accepted Answer

Squamous cell carcinoma

Chapter 5: The Integumentary System – Structure and Function

Guida di studio - Domande di pratica

Study guide - Flashcard