OUTER EAR is divided into two parts THE PINNA and EXTERNAL AUDITORY CANAL . PINNA is that part of the ear which protudes from the side of the skull made of cartilage covered by skin, collect sound and channel it into the ear canal. The Pinna is angled so that it catches sounds that comes from in front more than from behind and is helpful in localizing sounds.FUNCTION OF PINNA The visible portion that is commonly reffered to as THE EAR. Help localize sound sources.Each individual pinna creates a distinctive imprint on the acoustic wave , travelling into auditory canal.
