Adipose tissue is primarily composed of what?

• A. Muscle cells
• B. Nerve cells
• C. Fat cells
• D. Blood cells

Answer: (C)

Adipose tissue is primarily composed of fat cells, also known as adipocytes. These cells are specialized for storing energy in the form of fat, and they play a crucial role in the body's metabolism. Adipocytes not only provide insulation and cushioning for organs but also release hormones and signaling molecules that are important for regulating various physiological processes, such as hunger and energy balance.

In contrast, muscle cells make up muscle tissue and are involved in movement; nerve cells are components of the nervous system and play key roles in signal transmission; blood cells, which include red blood cells and white blood cells, circulate in the bloodstream and are involved in oxygen transport and immune response. Each of these cell types has distinct functions that do not pertain to the primary role of adipose tissue, which focuses on fat storage and metabolic regulation. Thus, the correct answer highlights the specific function and composition of adipose tissue.