What do melanocytes produce?

Pigment that shields DNA from UV light

Integumentary System

Anatomy MCQs: Skin

The body’s largest organ — a living barrier that senses touch, holds in water, and regulates temperature.

5 questions

The essentials

Function: Protects, senses, and cools
Location: Covering the entire body

The questions

Which layer of skin actually forms the waterproof barrier?
1. Dermis
2. Hypodermis
3. Stratum corneum
4. Basement membrane
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Answer: Stratum corneum
This outer layer is made of dead, flattened cells packed in a lipid mortar — dead cells doing the protecting.
What do melanocytes produce?
1. Sweat
2. Sebum
3. Pigment that shields DNA from UV light
4. Collagen
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Answer: Pigment that shields DNA from UV light
Melanin absorbs ultraviolet radiation before it can damage the DNA of skin cells.
Which layer holds the nerves, blood vessels, and glands?
1. Epidermis
2. Dermis
3. Stratum corneum
4. Basement membrane
Show the answer
Answer: Dermis
The dermis is the living, structural layer beneath the epidermis, full of collagen and elastin.

2 more questions in this set

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