Subcutis
Subcutis
Subcutis (pronunciation: /sʌbˈkjuːtɪs/), also known as the hypodermis or subcutaneous tissue, is the deepest layer of the skin. It is primarily composed of adipose tissue and connective tissue, and serves as a storage depot for fat and water, as well as a passageway for blood vessels and nerves to reach the dermis and epidermis.
Etymology
The term "subcutis" is derived from the Latin words "sub", meaning "under", and "cutis", meaning "skin". It is thus named for its position beneath the skin.
Structure
The subcutis is primarily composed of loose connective tissue and lobules of fat. It contains larger blood vessels and nerves than those found in the skin. The subcutis is bound to the underlying muscle by fibrous septae that give the layer its lobulated appearance.
Function
The subcutis serves several functions in the body. It provides insulation and regulates temperature, stores energy in the form of fat, and cushions the body against trauma. The subcutis also allows for the passage of nerves and blood vessels to the skin.
Related Terms
- Dermis: The layer of skin directly above the subcutis.
- Epidermis: The outermost layer of the skin.
- Adipose tissue: A type of connective tissue that stores fat.
- Connective tissue: Tissue that supports, binds, or separates other tissues or organs.
- Septae: Fibrous partitions separating the lobules of the subcutis.
External links
- Medical encyclopedia article on Subcutis
- Wikipedia's article - Subcutis
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