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:

“Now listen, buddy, there are a few corny ideas you got to get out of your head if you’re going to fly an airplane. Most things are just the reverse from what people think. The higher you are the safer you are. The Earth down there, that, that’s your enemy because once you hit that, boy, you splatter.”
—Dalton Trumbo (1905–1976)

“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)

“I tied down time with a rope
but it came back.
Then
I put my head in a death bowl
and my eyes shut up like clams.
They didn’t come back.”
—Anne Sexton (1928–1974)