External ear: lateral view (Latin)

The auricula has several depressions and elevations that comprise its unique shape. The tragus is one of several cartilaginous flaps in the auris externa and provides a lateral border to the distal end of the meatus acousticus externus. The antitragus is located posteroinferior to the tragus, from which it is separated by the incisura intertragica. The helix forms the outer concave border of the ear (auris) and may present a small congenital protuberance called the tuberculum auriculae/Darwini (not shown). Internal to the helix in another raised cartilaginous structure called the antihelix which presents paired, fork-like crura at its superior extremity. It is separated from the helix by the scapha auriculae. Finally, the inferiormost structure of the auricula is the soft, fibrofatty structure known as the lobulus auriculae.