ear
Ear (ear) is the animal to receive and perceive sound waves, identify the position to maintain the body balance of the organ, to provide hearing for the animals. The ear may be collectively referred to as the whole auditory system, or may only be exposed to the outside of the body (outer ear). In most of the mammals, the exposed part of the body is also known as the ear shell, is also the first part of the sound received. While the human ear shell is also known as the auricle. Only vertebrates have ear auditory structures. One of the mammals, including humans, has a pair of ears, one on both sides of the head, usually symmetrical, so you can determine the location of the sound source. ...