The three main parts of the skin, from superficial to deep, are the epidermis, dermis, and hypodermis. Each layer has a unique structure and function, contributing to the skin's overall role in protecting the body and maintaining homeostasis.
- Epidermis: This outermost layer serves as the skin's primary barrier against environmental hazards. It's made up of several layers of epithelial cells, with the outermost layer continuously shedding and being replaced.
- Dermis: Found beneath the epidermis, the dermis is a thicker layer composed of connective tissue, blood vessels, nerves, hair follicles, and sweat glands. It provides structural support, nourishes the epidermis, and plays a role in temperature regulation.
- Hypodermis: Also known as the subcutaneous layer, the hypodermis is the deepest layer of the skin. It consists primarily of fat tissue, which helps insulate the body and cushion internal organs. The hypodermis also anchors the skin to the underlying muscle and bone.
