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.
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Famous quotes containing the word head:
“If the head is lost, all that perishes is the individual; if the balls are lost, all of human nature perishes.”
—François Rabelais (1494–1553)
“And Death fell with me, like a deepening moan.
And He, picking a manner of worm, which half had hid
Its bruises in the earth, but crawled no further,
Showed me its feet, the feet of many men,
And the fresh-severed head of it, my head.”
—Wilfred Owen (1893–1918)
“Your head was
radiant in its emptiness,
a small clean room.”
—Denise Levertov (b. 1923)