The structure that connects muscles to bones is called:

Tendons are strong, fibrous connective tissues that attach muscles to bones, enabling movement.They transmit the force generated by muscle contractions to the bones, allowing the skeleton to move. Tendons are composed mainly of collagen fibers, which give them strength and flexibility. Unlike ligaments, which connect bones to other bones, tendons connect muscles to bones. Common tendons include the Achilles tendon, which connects the calf muscles to the heel bone, and the patellar tendon, which connects the quadriceps muscle to the patella (kneecap).