Head

In anatomy, the head of an animal is the rostral part (from anatomical position) that usually comprises the brain, eyes, ears, nose and mouth (all of which aid in various sensory functions, such as sight, hearing, smell, and taste). Some very simple animals may not have a head, but many bilaterally symmetric forms do. Heads develop in animals by an evolutionary trend known as cephalization. In bilaterally symmetrical animals, nerve tissues concentrate at the anterior region, forming structures responsible for information processing. Through biological evolution, sense organs and feeding structures also concentrate into the anterior region, which collectively form the head.

Read more about Head:  Human Head

Famous quotes containing the word head:

    The best number for a dinner party is two—myself and a dam’ good head waiter.
    Nubar Gulbenkian (1896–1972)

    No sociologist ... should think himself too good, even in his old age, to make tens of thousands of quite trivial computations in his head and perhaps for months at a time. One cannot with impunity try to transfer this task entirely to mechanical assistants if one wishes to figure something, even though the final result is often small indeed.
    Max Weber (1864–1920)

    “If my head hurt a hair’s foot
    Pack back the downed bone. If the unpricked ball of my breath
    Bump on a spout let the bubbles jump out....”
    Dylan Thomas (1914–1953)