Question 1

Which of the following best describes the main function of the integumentary system (skin)?

Accepted Answer

It keeps water and other precious molecules inside the body.

Question 2

Which layer of the epidermis is responsible for rapid cell reproduction and is the deepest layer closest to the dermis?

Accepted Answer

Stratum Basale

Question 3

A patient presents with a burn that has destroyed the epidermis but left the dermis intact. Which skin function is most compromised?

Accepted Answer

Protection against mechanical damage

Question 4

Which cell type in the epidermis produces the protein that makes the skin tough and water-resistant?

Accepted Answer

Keratinocytes

Question 5

Which of the following is NOT a function of the skin listed in the study materials?

Accepted Answer

Secretion of digestive enzymes

Question 6

A person with a genetic mutation that prevents the formation of desmosomes in the epidermis would most likely experience which symptom?

Accepted Answer

Fragile skin that blisters easily due to poor cell adhesion

Question 7

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

Accepted Answer

Stratum Lucidum

Question 8

If a patient has a deficiency in melanin production, which cell type is most likely malfunctioning?

Accepted Answer

Melanocytes

Question 9

Which of the following best describes the role of Merkel cells in the epidermis?

Accepted Answer

They are associated with sensory nerve endings and serve as touch receptors.

Question 10

Which region of the dermis contains dense irregular connective tissue, sweat glands, and deep pressure receptors called lamellar corpuscles?

Accepted Answer

Reticular Layer

Question 11

A patient is unable to sense pain, touch, and pressure in their skin. Which structure is most likely damaged?

Accepted Answer

Nerve endings

Question 12

Which of the following statements about the epidermis is TRUE?

Accepted Answer

It is avascular and relies on diffusion from the dermis for nutrients.

Question 13

Which type of epithelial membrane lines body cavities that open to the exterior, such as the digestive and respiratory tracts?

Accepted Answer

Mucous membrane

Question 14

Which formula correctly represents the relationship between the number of cell layers ($$n) in $$the stratum corneum and the total thickness ($$T) of $$the layer, given that each cell layer has an average thickness $$t$$?

Accepted Answer

$$T = n 	imes t$$

Question 15

Which of the following is a connective tissue membrane that lines joint cavities and secretes a lubricating fluid?

Accepted Answer

Synovial membrane

Question 16

A patient with a genetic disorder affecting the production of keratin would most likely have which symptom?

Accepted Answer

Fragile skin that is easily damaged and loses water rapidly

Question 17

Which structure in the skin acts as a 'sentinel' to alert and activate immune system cells to threats such as bacterial or viral invasion?

Accepted Answer

Epidermal dendritic cell

Question 18

Which layer of the dermis is responsible for forming looped and whorled ridges on the epidermal surface that enhance grip?

Accepted Answer

Papillary Layer

Question 19

If the skin is exposed to a strong acid, which function of the integumentary system is most directly involved in protection?

Accepted Answer

Protection against chemical damage

Question 20

Which of the following best explains why the epidermis is avascular?

Accepted Answer

It relies on diffusion of nutrients from the underlying dermis.

Skin and Body Membranes: Structure and Function (Module 4 Study Notes)

Guida di studio - Domande di pratica

Study guide - Flashcard