What is the main function of connective tissue?

• A. To transmit electrical signals between cells
• B. To support physically and nutritionally
• C. To generate movement through contraction
• D. To store genetic information

Answer: (B)

The main idea here is that connective tissue provides both structural support and metabolic sustenance for the body's tissues. It forms the framework that holds organs in place, links tissues together, and protects or cushions them. The extracellular matrix, with components like collagen, gives strength and shape, while blood vessels within many connective tissues bring in nutrients and remove wastes, delivering nourishment to cells embedded in the matrix. This combination of physical support and nutritional supply is the defining role of connective tissue, differentiating it from nervous tissue (which transmits signals), muscle tissue (which contracts to move), and genetic material stored in cell nuclei.