ANATOMY & PHYSIOLOGY A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site pinna The long-eared bat has large, elaborate pinnae that play a crucial role in its sonar system The visible part of the outer ear, which serves to collect sound and funnel it into the external auditory meatus (ear canal). Also known as the auricle, it is present in some mammals, including humans, and is made of cartilage. In some species, such as cats and dogs, the pinna is movable and helps locate the direction from which sounds are coming. Related category    • ANATOMY AND PHYSIOLOGY Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP