part of part of has quality has quality continuous with continuous with in taxon develops from develops from Mammalia reflectivity external acoustic meatus subdivision of head external ear pinna UMLS:C0928075 pinnae auricle of external ear UBERON:0001757 auricula (auris externa) EMAPA:17589 auricula NCIT:C32165 The external expanded part of the ear characterized by a funnel-shaped structure through which the sound vibrations are received. [Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG] pinna of ear The part of the ear that projects from the head, connecting to the external acoustic meatus. auricle FMA:56580 MA:0000259 Wikipedia:Pinna_(anatomy) VHOG:0000460 Mammals have a third type of tympanic ear. An external flap, the auricle or pinna, helps funnel sound waves down the external acoustic meatus to the tympanic membrane.[well established][VHOG] galen:Auricle auricle of ear In various species, the pinna can also signal mood and radiate heat EV:0100355 The purpose of the pinna is to collect sound. It does so by acting as a funnel, amplifying the sound and directing it to the ear canal. While reflecting from the pinna, sound also goes through a filtering process which adds directional information to the sound (see sound localization, head-related transfer function, pinna notch). EHDAA2:0001467 SCTID:421159007 auditory hillocks