pinna

Soft cartilaginous outer portion of the ear located at the side of the head; it allows sounds to be collected.

earlobe

Fleshy extension of the lower section of the pinna; it plays no role in hearing.

acoustic meatus

Opening through which sounds collected by the pinna reach the tympanic cavity.

tragus

Flat triangular protuberance located in front of the acoustic meatus, protecting especially the concha.

anterior notch

Deep depression separating the helix from the tragus.

crus of helix

Front portion of the helix beginning at the base of the concha.

triangular fossa

Small depression located in the upper portion of the helix between its two branches.

tail of helix

Terminal end of the helix extending to the upper portion of the lobe.

antitragus

Small triangular protuberance at the terminal end of the antihelix.

intertragic notch

Deep depression at the base of the acoustic meatus between the antitragus and the tragus.

concha

Deep cavity of the pinna of the ear above the antitragus; the acoustic meatus opens into it.

antihelix

Protuberance parallel to and inside the helix dividing into two branches in its upper section.

helix

Protruding fold of the pinna of the ear extending from the concha to the lobe.