Epidermis

Definition

The epidermis is the outermost layer of the skin, composed of keratinized, stratified squamous epithelium. It serves as a protective barrier against environmental hazards and helps in regulation of moisture loss.

Related terms

Keratinocytes:

These are the primary type of cell found in the epidermis, responsible for producing keratin, a protein that gives skin its strength and resilience.

Stratum corneum: The outermost layer of the epidermis, consisting of dead keratinocytes that provide a tough barrier against environmental damage.

Melanocytes:

Cells located in the bottom layer of the epidermis that produce melanin, which gives skin its color and offers protection against UV radiation