What is the layer of fascia immediately deep to the skin that often contains adipose tissue?

The layer of fascia that is immediately deep to the skin and often contains adipose tissue is known as the superficial fascia. This layer serves an important role in providing insulation, cushioning, and support for the skin, while also allowing for the mobility of the skin over underlying structures. The presence of adipose tissue within this layer contributes to its functions in energy storage, temperature regulation, and as a protective layer.

The superficial fascia is also involved in the overall structure of various regions of the body, as it can connect to deeper layers and structures while allowing for flexibility and movement. This contrasts with deeper fascia layers, which are more fibrous and provide support to deeper muscles and organs, playing different roles in the body's architecture.