Question

How many layers does the epidermis have in human skin?

• A. 4
• B. 5
• C. 2
• D. 3

Hint:

The stratum basale is the only layer where skin cells actively divide to form new cells, which then move upwards as they mature and become part of the outer layers.

Answer 1

The Correct Option is B

The epidermis is the outermost layer of the skin and plays a crucial role in protecting the body from environmental factors. In human skin, the epidermis consists of 5 layers:

1. Stratum corneum: The outermost layer, composed of dead keratinized cells that provide a waterproof barrier.
2. Stratum lucidum: Present only in thick skin (palms and soles), this layer provides an additional layer of protection.
3. Stratum granulosum: Cells in this layer begin to die and form granules that help to waterproof the skin.
4. Stratum spinosum: Known as the "prickle cell layer," it is involved in the skin's immune response.
5. Stratum basale (Stratum germinativum): The deepest layer, where new skin cells are produced.

These five layers work together to protect the body from mechanical damage, pathogens, and dehydration.