Heart

Heart

The heart is a hollow muscle that pumps blood throughout the blood vessels by repeated, rhythmic contractions. It is found in all animals with a circulatory system (including all vertebrates).

Read more about Heart.

Famous quotes containing the word heart:

    “My heart doth joy that yet in all my life
    I found no man but he was true to me.”
    —William Shakespeare (1564–1616)

    “Ah! as the heart grows older
    It will come to such sights colder
    By and by, not spare a sigh
    Though worlds of wanwood leafmeal lie;
    And yet you will weep and know why.”
    —Gerard Manley Hopkins (1844–1889)

    “My heart is turned to stone; I strike it, and it hurts my hand.”
    —William Shakespeare (1564–1616)