Question

Place the layers of the epidermis in order 1-5 from the outermost layer to the layer attached to the dermis by the basement membrane.

Answer 1

The layers of the epidermis, from the outermost to the layer attached to the dermis, are: stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale.

Step-by-step explanation:

The layers of the epidermis, from the outermost layer to the layer attached to the dermis by the basement membrane, are:

1. Stratum corneum: This is the outermost layer of the epidermis and is comprised of dead skin cells that are constantly shed and replaced.
2. Stratum lucidum: This layer is only present in thick skin, such as the palms of the hands and soles of the feet, and provides additional protection.
3. Stratum granulosum: This layer is involved in the production and release of lipids that help to waterproof the skin.
4. Stratum spinosum: This layer contains several layers of keratinocytes, which produce the protein keratin that helps to give the skin its strength and structure.
5. Stratum basale: This is the deepest layer of the epidermis and is responsible for the production of new skin cells. It is attached to the dermis by the basement membrane.