Cosmetology Test Anatomy and Physiology 5

Question 1

The dermis is divided into two layers. Which layer directly contacts the epidermis?

Accepted Answer

Papillary layer

Answer

The papillary layer is the thin, superficial portion of the dermis that interdigitates with the epidermis via dermal papillae.

Question 2

Which term describes the outermost layer of the hair shaft?

Accepted Answer

Cuticle

Answer

The hair cuticle consists of overlapping scale-like cells that protect the inner cortex and medulla.

Question 3

The buccinator muscle is located in the cheek and is primarily responsible for:

Accepted Answer

Compressing the cheeks against the teeth during chewing and whistling

Answer

The buccinator compresses the cheek wall, keeping food between the teeth during chewing and aiding in whistling and blowing.

Question 4

Nail matrix cells undergo which process to produce new nail plate cells?

Accepted Answer

Mitosis

Answer

The nail matrix cells divide by mitosis, pushing older cells forward where they flatten and keratinize to form the nail plate.

Question 5

Which cranial nerve provides sensory innervation to the skin of the face?

Accepted Answer

Trigeminal nerve (V)

Answer

The trigeminal nerve (cranial nerve V) has three branches that carry sensory information from most of the face.

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