Flexible, strong, but can get injured under pressure. Who am I? Injury to the Achilles tendon, also called the "calcaneal tendon", known to be the largest and strongest tendon in the body (Fitness and Exercise). The two most common injuries are Achilles tendinopathy and tendon tear or rupture (sports medicine). It is a tough band of fibrous tissue that connects the calf muscles to the heel bone, also called the "calcaneus." If you look under the skin behind the ankle feel the tendon there. However, there are two types of information about the condition of the muscles that are the key. This information is the muscle spindles, present in skeletal muscles, which need to know the amount of tension in the muscle and its associated tendons (Marieb & Hoehn p.498). According to Marieb & Hoehn, tendon organs are proprioceptors located in tendons, near the insertion of skeletal muscle. They consist of small bundles of “collagen” tendon fibers together in a layered capsule, with sensory terminals wrapped between and around the fibers. So when the muscle ...