Skin

The epidermis is an elastic layer on the outside that is continually being regenerated.

The subcutaneouus layer er under the dermis is made up of connective tissue and fat (a good insulator).

Functions of the skin

• Provides a protective barrier against mechanical, thermal and physical injury and hazardous substances.
• Prevents loss of moisture.
• Reduces harmful effects of UV radiation.
• Acts as a sensory organ (touch, detects temperature).
• Helps regulate temperature.
• An immune organ to detect infections etc.
• Production of vitamin D.

The skin is the largest organ of the body and is made up of water, proteins, fats and minerals. It has Thethree skinmain protectslayers, the bodyepidermis, fromthe germsdermis and regulates body temperature. Nerves in the skin help to feel sensations such as heat andsubcutaneous coldlayer.

The epidermis is an elastic layer on the outside that is continually being regenerated.

The dermis is the inner layer that includes the following:

Sweat glands – produce sweat that travels via sweat ducts to openings in the epidermis called pores. They play a role in temperature regulation.

Hair follicles – are pits in which hairs grow. Hairs also play a role in temperature regulation.

Sebaceous glands – produce sebum (an oil) to keep hairs free from dust and bacteria. Sebum and sweat make up the 'surface film'.

The subcutaneous layer under the dermis is made up of connective tissue and fat (a good insulator).

The skin is the largest organ of the body and is made up of water, proteins, fats and minerals. The skin protects the body from germs and regulates body temperature. Nerves in the skin help to feel sensations such as heat and cold.

The skin is the largest organ of the body and is made up of water, proteins, fats and minerals. The skin protects the body from germs and regulates body temperature. Nerves in the skin help to feel sensations such as heat and cold.