The integumentary system is everything covering the outside of an animal's body. This account is written mostly with people in mind, but it applies more widely.
The integumentary systemEdit
Skin, hair, scales, feathers and nails make up the integumentary system.
There are two layers of skin:
- Epidermis - This is the top layer of the skin and is made of dead cells. The cells are shed all the time, but new ones are always being made, so people never lose any skin. It has sweat pores.
- Dermis - This is the second layer of skin. It has touch receptors, and oil and sweat glands. It makes skin stretchy.
- Subcutaneous tissue (The subcutaneous tissue is not part of the skin, but it is in the integumentary system)
There are four types of glands
The integumentary system has lots of different functions. It:
Here is a list of skin problems:
- Acne, when pimples form on the skin
- Sunburn, when UV radiation from the sun burns your skin
- Skin cancer, caused by getting too many sunburns.
There are other skin problems that are less common.
- Kardong, Kenneth V. 1998. Vertebrates: comparative anatomy, function, evolution. McGraw-Hill. IBSN 0-07-115356-X/0-697-28654-1