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 thou dost slander her and torture me,
Never pray more; abandon all remorse;
On horror’s head horrors accumulate;
Do deeds to make heaven weep, all earth amazed;
For nothing canst thou to damnation add
Greater than that.”
—William Shakespeare (1564–1616)
“I believe no gentleman would like to have his family affairs neglected because his wife was filling her head with crotchets and pothooks, and who, because she understood a few scraps of Latin, valued that more than minding her needle or providing her husband’s dinner.”
—Sarah Fielding (1710–1768)
“Who can speak broader than he that has no house to put his head in? Such may rail against great buildings.”
—William Shakespeare (1564–1616)