head

A head is the part of an organism which usually includes the ears, brain, forehead, cheeks, chin, eyes, nose, and mouth, each 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, regardless of size.
Heads develop in animals by an evolutionary trend known as cephalization. In bilaterally symmetrical animals, nervous tissue 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; these collectively form the head.

View More On Wikipedia.org
Recent contents Top users
  1. W

    Engine I need help with what head I have and what I should do moving forward

    I bought a 1985 CJ seven from a guy who acquired it from someone who passed away. That builder did a lot of custom work. The current owner really had no idea what he was dealing with, and I bought it knowing it had fuel injection, on board air, lockers, 411 gears, and a bunch of other nice mods...
  2. J

    Engine Jeep Soup set back ...

    GOOD NEWS first. The weather came out of the Artic Sub Zeros! Started Jeep Soup. Jeep Soup is running like a Sewing Machine. Really quiet, and NO lifter noise. STARTED Easily, with minor Carb Adjustments. !! Well, SUMS a BISCUITS !!!! I "Disturbed" 2 head bolt nuts to remove the Air Cleaner...
Back
Top Bottom