A head is the cephalic part of an animal, which usually comprises the eyes, ears, 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. 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 interior region; these collectively form the head.
Downloads: 1,608+Report app for spam or abuse!
Blood Pressure Scanner Prank Free
Blood Pressure Scanner Prank application works on all android phones.
Tell My Geo Free
Locate persons in your care at anytime or have their phones send you their locations timely.
Blood Pressure Tracker Lite Free
One of the most vital elements for the human body is Blood Pressure.
Blood Pressure Readings Free
You can get a blood pressure reading with various blood pressure monitors.