Heart

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 collagen. The muscles and tendons help to control joint movement. Muscles have tendinous origins (where they arise) and insertions (where they insert) on bones. Tendons are the part of the muscle that is white and fibrous. Tendons have very little blood supply so when torn it takes some time to heal. In severe tendon injuries the attachment of the tendon can be torn away from the bone.

The same tissue that connects bone to bone is called a ligament. The difference is an anatomical one, not a functional one.

extensor

The blood flows to and from the heart primarily because of the relaxing and contracting of the heart muscle. Muscles throughout the body also exert pressure on blood vessels to literally push blood to the heart.

the relaxing and contracting of the heart muscle

I

Flexor

Flexor

Normally yes, but doctors sometimes prescribe light exercise to help improve the function of a heart that may not be working normally.