Final answer:
The hypodermis is a layer below the dermis that connects the skin to the underlying fascia. It consists of connective tissue and adipose tissue for fat storage, insulation, and cushioning.
Step-by-step explanation:
The hypodermis, also known as the subcutaneous layer or superficial fascia, is a layer directly below the dermis. It is not part of the skin but serves to connect the skin to the underlying fascia of bones and muscles. The hypodermis consists of well-vascularized, loose, areolar connective tissue and adipose tissue, which functions as a mode of fat storage and provides insulation and cushioning for the integument.