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.

Famous quotes containing the word head:

“My head gripped in bony vise
of knees, the writhing struggle
to wrench free, the blows, the fear
worse than blows that hateful

Words could bring, the face that I
no longer knew or loved. . . .”
—Robert Earl Hayden (1913–1980)

“That is Lenin. Look at the self-willed, stubborn head. A real Russian peasant’s head with a few faintly Asiatic lines. That man will try to overturn mountains. Perhaps he will be crushed by them. But he will never yield.”
—Rosa Luxemburg (1871–1919)

“She, her head back, waited
Barbarous the stalking tide;
Her, nor balked nor sated
But plunged into the wide
Area of mental ire,
Lay at her wandering side.”
—Allen Tate (1899–1979)