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:
“Be subject to one another out of reverence for Christ. Wives, be subject to your husbands as you are to the Lord. For the husband is the head of the wife just as Christ is the head of the church, the body of which he is the Savior. Just as the church is subject to Christ, so also wives ought to be, in everything, to their husbands. Husbands, love your wives, just as Christ loved the church and gave himself up for her...”
—Bible: New Testament, Ephesians 5:21-25.
“But it thought no bed too narrow—it stood with lips askew
And shook its great head sadly like the abstract Jew.”
—Robert Penn Warren (1905–1989)
“I can’t make head or tail of Life. Love is a fine thing, Art is a fine thing, Nature is a fine thing; but the average human mind and spirit are confusing beyond measure. Sometimes I think that all our learning is the little learning of the maxim. To laugh at a Roman awe-stricken in a sacred grove is to laugh at something today.”
—Wallace Stevens (1879–1955)