OSMT (Ontario Society of Medical Technologists) Practice Exam

What is the function of tendons in the muscular system?

1. Conduct electrical signals to muscles

2. Store and release calcium ions

3. Attach muscles to bones

4. Provide insulation to the muscles

The correct answer is: Attach muscles to bones

Tendons play a crucial role in the muscular system by attaching muscles to bones, which allows for the transfer of force generated by muscle contractions to create movement at joints. When a muscle contracts, it pulls on the tendon, which in turn pulls on the bone, resulting in motion. This attachment not only facilitates movement but also helps maintain stability in the skeletal system. The structure of tendons, being strong and fibrous, allows them to withstand the significant forces generated during muscle contraction. In the context of the other options, tendons do not conduct electrical signals or store and release calcium ions, as those functions are related to other components of muscle physiology, such as nerves and various cell organelles. Additionally, providing insulation is not a function attributed to tendons; that role is generally associated with adipose tissue and the nervous system. Therefore, the primary and distinctive role of tendons in the muscular system is indeed to connect muscles to bones, enabling the mechanics of movement.