AFAA Personal Trainer Certification 2026 – 400 Free Practice Questions to Pass the Exam

The primary function of a tendon is to attach muscle to bone, which is accurately described in the chosen option. Tendons are composed of dense, fibrous connective tissue, which gives them the strength and durability necessary for this role. When muscles contract, the force generated is transmitted through the tendon to the bone, resulting in movement.

Tendons play a crucial role in the musculoskeletal system by ensuring that muscle contractions effectively translate into joint movement, allowing for a wide range of physical activities. Their structure is highly adapted to withstand the stress and strain of these forces while remaining flexible enough to accommodate some movement.

The other options describe different components of the body: connective tissues that are more focused on muscle sheaths, smooth muscle, and elastic connective tissues — none of which specifically pertains to the primary function of tendons. This distinction reinforces the understanding of tendons as critical structures in linking muscles to bones, facilitating coordinated movement.