making the world better one answer at a time tendons attach muscles to bones tendons may also attach muscles to structures such as the eyeball tendons are connective tissues that are tough fibrous material rich in collagenthe muscles and tendons help to control joint movementhe fibrous connective tissue that connects muscles to bones are called tendons 7 people found this useful edit share to the best ab workout plans to strengthen your core core strengthening exercises are effective workouts that strengthen your ab muscles back muscles and other areas of your core