Adipose tissue Coloured Scanning Electron Micro graph SEM of fat cells making up adipose connective tissue The rounded fat cells brown red are called adipocytes Connective tissue fibres orange have a supporting function for the fat cells Almost the entire volume of each adipocyte is occupied by a single lipid droplet formed from triglycerides Fat not used up in metabolic processes is housed in these cells Adipose connective tissue forms a thick layer under the skin around the buttocks thighs and kidneys It functions as an insulating layer and energy store Magnificationx at xcm size Magnification x at x inch size Magnification x at mm