Skincare Skin Anatomy and Physiology

Question 1

Which layer of the skin is the outermost and acts as the primary barrier against the environment?

Accepted Answer

Epidermis

Answer

Dermis

Answer

Hypodermis

Answer

Subcutaneous layer

Question 2

What cells in the epidermis are responsible for producing melanin?

Accepted Answer

Melanocytes

Answer

Keratinocytes

Answer

Langerhans cells

Answer

Merkel cells

Question 3

Which protein is the primary structural component of the epidermis?

Accepted Answer

Keratin

Answer

Collagen

Answer

Elastin

Answer

Fibronectin

Question 4

The dermis layer contains which of the following structures?

Accepted Answer

Hair follicles and sweat glands

Answer

Melanocytes only

Answer

Stratum corneum

Answer

Adipose tissue only

Question 5

What is the normal pH range of healthy skin?

Accepted Answer

4.5–5.5

Answer

6.5–7.5

Answer

3.0–4.0

Answer

7.0–8.0

Question 6

Which sublayer of the epidermis is responsible for new cell production through mitosis?

Accepted Answer

Stratum basale

Answer

Stratum corneum

Answer

Stratum granulosum

Answer

Stratum spinosum