Subcutaneous tissue, also known as the hypodermis, is the layer of fat and connective tissue located beneath the skin. It serves as a cushion, protecting underlying muscles and bones from injury. This layer also helps to insulate the body, regulating temperature by reducing heat loss. In addition to its protective and insulating functions, subcutaneous tissue contains larger blood vessels and nerves. It plays a crucial role in storing energy in the form of fat, which the body can use when needed. Overall, this tissue is essential for maintaining overall health and supporting various bodily functions.