Humans have three primary layers of skin: the epidermis, the dermis, and the hypodermis.
- Epidermis: This is the outermost layer of skin, responsible for protection against the environment. It is made up of five sub-layers: the stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum basale.
- Dermis: This middle layer contains blood vessels, nerves, hair follicles, and sweat glands. It provides support and nourishment to the epidermis.
- Hypodermis: This deepest layer of skin is composed mainly of fat and connective tissue, and acts as an insulator and shock absorber.
While these are the primary layers, some sources, like the one from Study.com, list seven total layers in the skin, with the sub-layers of the epidermis being counted separately.
However, regardless of how many layers are counted, it's crucial to understand that each layer contributes significantly to the skin's overall function and health.
