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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Some articles on head:
... Manfred Hugo is the full-time Landrat (head of the district authority) since the 1st of July, 2002 ... From 1993 until June, 2002 he was the honorary head of the district authority ...
... representative democratic republic, where the President of Yemen is the head of state, while the Prime Minister of Yemen (who is appointed by the President) is ... The president is head of state, and the prime minister is head of government ...
... Head injury refers to trauma of the head ... However, the terms traumatic brain injury and head injury are often used interchangeably in medical literature ... The incidence (number of new cases) of head injury is 300 of every 100,000 per year (0.3% of the population), with a mortality rate of 25 per 100,000 in North America and 9 per 100,000 in Britain ...
... Three stars compose a small triangle which mark the head ... The apex is marked by Meissa (Lambda Orionis), a hot blue giant of spectral type O8 III and apparent magnitude 3.54 which lies some 1100 light years distant ...
... A mace is a blunt weapon, a type of club or virge—that uses a heavy head on the end of a handle to deliver powerful blows ... wooden or metal shaft, often reinforced with metal, featuring a head made of stone, copper, bronze, iron, or steel ... The head of a military mace can be shaped with flanges or knobs to allow greater penetration of plate armour ...
More definitions of "head":
- (noun): The striking part of a tool.
Example: "The head of the hammer"
- (verb): To go or travel towards.
Example: "Where is she heading"; "We were headed for the mountains"
- (noun): Oral-genital stimulation.
Example: "They say he gives good head"
Synonyms: oral sex
- (noun): (usually plural) an obverse side of a coin that bears the representation of a person's head.
Example: "Call heads or tails!"
- (noun): (nautical) a toilet on board a boat or ship.
- (verb): Form a head or come or grow to a head.
Example: "The wheat headed early this year"
- (noun): The subject matter at issue.
Example: "Under the head of minor Roman poets"
- (noun): An individual person.
Example: "Tickets are $5 per head"
- (noun): The educator who has executive authority for a school.
Synonyms: principal, school principal, head teacher
- (noun): A membrane that is stretched taut over a drum.
- (noun): A single domestic animal.
Example: "200 head of cattle"
- (noun): The length or height based on the size of a human or animal head.
Example: "He is two heads taller than his little sister"; "his horse won by a head"
- (noun): A user of (usually soft) drugs.
Example: "The office was full of secret heads"
- (verb): Take its rise.
Example: "These rivers head from a mountain range in the Himalayas"
- (verb): Be in the front of or on top of.
Example: "The list was headed by the name of the president"
- (verb): Travel in front of; go in advance of others.
- (noun): The foam or froth that accumulates at the top when you pour an effervescent liquid into a container.
Example: "The beer had a large head of foam"
- (verb): Be in charge of.
- (noun): A projection out from one end.
Example: "The head of the nail", "a pinhead is the head of a pin"
- (noun): (computer science) a tiny electromagnetic coil and metal pole used to write and read magnetic patterns on a disk.
Synonyms: read/write head
- (noun): A dense clusters of flowers or foliage.
Example: "A head of cauliflower"; "a head of lettuce"
- (noun): A rounded compact mass.
Example: "The head of a comet"
- (noun): (grammar) the word in a grammatical constituent that plays the same grammatical role as the whole constituent.
Synonyms: head word
- (noun): Forward movement.
- (verb): Direct the course; determine the direction of travelling.
Synonyms: steer, maneuver, manoeuver, manoeuvre, direct, point, guide, channelize, channelise
- (noun): The upper part of the human body or the front part of the body in animals; contains the face and brains.
Example: "He stuck his head out the window"
- (noun): The part in the front or nearest the viewer.
Example: "He was at the head of the column"
- (noun): A line of text serving to indicate what the passage below it is about.
Synonyms: heading, header
- (noun): A V-shaped mark at one end of an arrow pointer.
- (noun): The source of water from which a stream arises.
Example: "They tracked him back toward the head of the stream"
Synonyms: fountainhead, headspring
- (noun): The top of something.
Example: "The head of the stairs"; "the head of the page"; "the head of the list"
- (noun): That which is responsible for one's thoughts and feelings; the seat of the faculty of reason.
Example: "I couldn't get his words out of my head"
Synonyms: mind, brain, psyche, nous
- (noun): The tip of an abscess (where the pus accumulates).
- (noun): The front of a military formation or procession.
Example: "The head of the column advanced boldly"; "they were at the head of the attack"
- (noun): That part of a skeletal muscle that is away from the bone that it moves.
- (verb): Remove the head of.
Example: "Head the fish"
- (verb): Be the first or leading member of (a group) and excel.
Synonyms: head up
- (noun): The rounded end of a bone that bits into a rounded cavity in another bone to form a joint.
Example: "The head of the humerus"
- (noun): The pressure exerted by a fluid.
Example: "A head of steam"
Famous quotes containing the word head:
“I have placed you at the head of the Army of the Potomac.”
—Abraham Lincoln (18091865)
“I have in my head a whole army of people pleading to be let out and awaiting my commands.”
—Anton Pavlovich Chekhov (18601904)
“We may not pay Satan reverence, for that would be indiscreet, but we can at least respect his talents. A person who has for untold centuries maintained the imposing position of spiritual head of four-fifths of the human race, and political head of the whole of it, must be granted the possession of executive abilities of the loftiest order.”
—Mark Twain [Samuel Langhorne Clemens] (18351910)