CPS Anatomy of Skin & Hair 3

Question 1

Which stage of the hair growth cycle is characterized by active cell division in the hair bulb?

Accepted Answer

Anagen

Answer

During anagen, the hair bulb's matrix cells divide rapidly, pushing the hair shaft upward and lengthening the hair.

Question 2

What is the primary function of the stratum corneum in a pet's skin?

Accepted Answer

Form a physical barrier against pathogens and water loss

Answer

The stratum corneum is the outermost layer of the epidermis composed of dead, keratinized cells that protect against environmental insults and transepidermal water loss.

Question 3

What term describes the natural shedding of dead skin cells from the outermost epidermal layer?

Accepted Answer

Desquamation

Answer

Desquamation is the normal sloughing of corneocytes from the stratum corneum as new cells push upward from below.

Question 4

In cats, which anatomical feature makes their skin significantly more mobile than a dog's skin relative to body size?

Accepted Answer

Looser dermal collagen fiber arrangement

Answer

The loosely organized collagen fibers in feline dermis allow greater skin mobility, which is an evolutionary adaptation for escaping predators and absorbing bite wounds.

Question 5

Which protein is the primary structural component of both the hair shaft and the outer epidermal layers?

Accepted Answer

Keratin

Answer

Keratin is a fibrous structural protein that gives hair its strength and forms the tough, waterproof outer skin layers through a process called keratinization.

(CPS) Certified Pet Stylist Practice Test

(CPS) Certified Pet Stylist Practice Test

CPS Anatomy of Skin & Hair 3