What is the primary composition of elastic connective tissue?

The primary composition of elastic connective tissue is elastic fibers, which are specialized structures that allow this type of tissue to stretch and recoil. These fibers are made primarily of a protein called elastin, which provides the necessary elasticity and flexibility that enables the tissue to withstand mechanical stress while returning to its original shape. This property is crucial in areas of the body that require elasticity, such as in the walls of large blood vessels (like arteries) and in certain ligaments.

While collagen fibers are also an important component of connective tissues, they provide strength and support rather than elasticity. Reticular fibers, on the other hand, are more involved in creating a supportive framework for soft organs and tissues. Adipocytes, which are fat cells, play a role in storing energy but are not a defining feature of elastic connective tissue. Thus, the correct answer highlights the unique and essential nature of elastic fibers in maintaining the functionality of elastic connective tissue.