There are four layers of cells in the epidermis of thin skin. from superficial to deep, these layers are stratum ______, stratum ______, stratum ______, and stratum basale

General
1

there are four layers of cells in the epidermis of thin skin. from superficial to deep, these layers are stratum ______, stratum ______, stratum ______, and stratum basale.

2

What are the four layers of cells in the epidermis of thin skin?

Answer:
The four layers of cells in the epidermis of thin skin, from superficial to deep, are the stratum corneum, stratum granulosum, stratum spinosum, and stratum basale.

  1. Stratum Corneum: The stratum corneum is the outermost layer of the epidermis. It is composed of dead skin cells called corneocytes that are continuously shed and replaced. This layer acts as a barrier, protecting the underlying layers from dehydration and external factors.

  2. Stratum Granulosum: The stratum granulosum is the layer beneath the stratum corneum. It consists of cells that are in the process of transitioning from living to dying. These cells produce keratin, a tough fibrous protein that provides strength and water resistance to the skin.

  3. Stratum Spinosum: The stratum spinosum is the layer located below the stratum granulosum. It is named for the spiny appearance of the cells when observed under a microscope. The cells in this layer contain bundles of protein filaments called tonofibrils, which contribute to the overall strength and flexibility of the skin.

  4. Stratum Basale: The stratum basale, also known as the basal cell layer or germinal layer, is the deepest layer of the epidermis. It is comprised of actively dividing cells that constantly replenish the upper layers of the epidermis. These cells are responsible for the regeneration of the skin and its appendages, such as hair and nails.

These four layers work together to provide the skin with protection, barrier function, and the ability to regenerate.