part of part of deep to superficial to develops from develops from composed primarily of mesoderm adipose tissue musculature dermis hypodermis vertebrate hypodermis Wikipedia:Hypodermis subcutis TAO:0001136 NCIT:C33645 FMA:70544 ZFA:0001136 subcutaneous tissue Lowermost layer of the integumentary system in vertebrates. Types of cells that are found in the hypodermis are fibroblasts, adipose cells, and macrophages. It is derived from the mesoderm, but unlike the dermis, it is not derived from the dermatome region of the mesoderm. The hypodermis is used mainly for fat storage[WP]. sub-tegumental tissue CALOHA:TS-2366 BTO:0001314 UBERON:0002072 hypoderm subtegumental tissue integument mesoderm-derived structure organ component layer loose connective tissue integumentary system layer