The term subcutaneous refers to the layer of tissue located just beneath the skin’s surface. This layer contains a mix of fat and connective tissue, serving several important functions in the human body.
Primarily, the subcutaneous layer helps to insulate the body, maintaining body temperature by providing a barrier against heat loss. It also acts as a cushion, providing protection for muscles and bones from external trauma. Furthermore, this layer serves as an energy reserve, with fat cells storing energy that the body can use when needed.
In medical contexts, understanding the subcutaneous layer is crucial. For instance, many injections (like vaccinations or insulin) are administered into this layer to ensure the medication is absorbed properly into the bloodstream. Additionally, conditions that affect this layer, such as subcutaneous tissue infections, can lead to significant health issues, emphasizing its importance in overall body function.