The hypodermis, also called the subcutaneous tissue, is the layer of tissue beneath the dermis that contains variable amounts of fat (adipose tissue), connective tissue, blood vessels, and nerves.
It connects the skin to deeper structures and cushions underlying structures, helps regulate body temperature, stores energy, and anchors the skin to muscles and other tissues. The hypodermis also provides insulation and ensures mobility of the skin over underlying tissues.
The thickness of the hypodermis varies depending on factors such as age, sex, body region, and nutritional status.
QUICK FACT
Although it is commonly described as the deepest layer of the skin, the hypodermis is technically beneath the skin rather than part of the skin proper in some anatomical classifications.
COMMONLY CONFUSED WITH
- Dermis: the deeper layer of the skin itself.
- Adipose tissue: fat-containing tissue that is an important component of the hypodermis but does not make up all of it.
SEE ALSO