Skin

Skin is the outer covering of the human body. It performs many important functions, such as protecting internal organs and tissues from external influences, regulating body temperature, sense of touch, etc.

Skin structure:

The skin consists of three main layers - epidermis, dermis and subcutaneous fat.

The epidermis is the surface layer of the skin, consisting of stratified squamous keratinizing epithelium. The bulk of the epidermis consists of keratinocytes. The epidermis is constantly renewed, dead cells are exfoliated.

The dermis is the deeper layer of skin located below the epidermis. The dermis is rich in nerve endings and blood vessels. The dermis contains hair follicles, sweat and sebaceous glands. The main cells of the dermis are fibroblasts, which produce collagen and elastin fibers.

Subcutaneous fat is a deep layer of skin consisting of adipose tissue. It attaches the skin to the muscles, and also serves as a reserve of nutrients and a heat insulator.

Thus, the skin is a complex multifunctional organ that plays a vital role in the life of the body.