Skin is the largest organ in the human body, covering the entire external surface. It acts as a protective barrier, regulating body temperature and providing sensory input. Skin is composed of three main layers: the epidermis, dermis, and hypodermis.
- The epidermis is the outermost layer and is responsible for protecting the body from the environment.
- The dermis lies beneath the epidermis and contains blood vessels, nerves, and hair follicles.
- The hypodermis is the deepest layer and is primarily composed of fat.
The skin serves several crucial functions:
- Protection: The skin protects the body from infection, injury, and UV radiation.
- Regulation: The skin helps regulate body temperature by sweating and shivering.
- Sensation: The skin contains sensory receptors that allow us to feel touch, pressure, temperature, and pain.
