Adipose Cells

Adipose cells, also known as fat cells, is a type of connective tissue that contains large globules of fat. There are two different types of adipose cells: white and brown adipose cells. White adipose cells, also known as adipocytes, contain large globules of fat, a very small amount of cytoplasm, and flattened nuclei that are not located in the center of the cell. Brown adipose cells, on the other hand, contain fat globules of different sizes, a large amount of cytoplasm, lots of mitochondria, and round nuclei that are located in the center of the cell; adipose cells do not have all the organelles of the typical eukaryotic cell. Both brown and white adipose cells are polygonal in shape, but their size differs depending on the amount in a person's body. Whenever someone gains weight, the number of fat cells in his/her body increases, and the fat cells fill up with fat and increase in size. Whenever someone loses weight, the number of fat cells stay the same, but they shrink in size.
Adipose cells are most commonly located right underneath the skin, between muscles, around the kidneys and heart, behind the eyeballs, in abdominal membranes. They fill up space between organs and tissues and provide structural and metabolic support, functioning as a cushion against trauma for the tissues of the body. Most of the organs in the human body are wrapped in a layer of fat to protect them from trauma. Adipose cells are also used in the storing of fat that comes directly from our diet. When food is eaten and it is not burned as energy, it is stored in the adipose cells, used when exercising for a long time. Adipose cells help to protect our body and store the fat from our diet.
(all information taken from http://study.com/academy/lesson/adipose-tissue-function-location-definition.html)