undirhúð
Undirhúð, also known as the hypodermis or subcutaneous layer, is the deepest layer of the integumentary system, situated beneath the dermis. It primarily consists of loose connective tissue and adipose tissue, which is fat. This layer plays a crucial role in insulating the body, cushioning underlying organs, and storing energy in the form of fat. The thickness of the hypodermis can vary considerably depending on factors such as age, sex, and body region, being generally thicker in women and in areas where fat is stored.
The hypodermis serves as an anchor for the skin to the underlying muscles and bones, while also