What is the main characteristic of adipose tissue?

Adipose tissue is primarily characterized by being composed of fat cells, also known as adipocytes. These cells specialize in storing energy in the form of fat, which serves as insulation and a cushion for the body, as well as playing crucial roles in metabolic functions. The unique structure of adipose tissue allows it to efficiently store and release energy as needed, contributing to overall energy homeostasis.

While adipose tissue can influence hydration and hormone regulation, and it does have a role in providing thermal insulation, its primary and most defining feature is the presence of fat cells. This composition is notably different from the functions of other tissues, such as mineral storage in bones or support for blood circulation in vascular tissues.