2.2　Anatomical Nomenclature

2.2.1　The Anterior Surface

2.2.1.1　Lobe

2.2.1.1.1　Lobe

The lowest part of the auricle; devoid of cartilage.

2.2.1.1.2　Anterior Groove of the Ear Lobe

The groove between the lobe and the cheek.

2.2.1.2　Helix

2.2.1.2.1　Helix

The prominent, curved, free rim of the auricle.

2.2.1.2.2　Helix Crus

A transverse ridge of the helix that continues posteriorly into the ear cavity.

2.2.1.2.3　Spine of the Helix Crus

Between anthelix and helicis uplift.

2.2.1.2.4　Notch of the Helix Crus

The cartilaginous prominence between the helix and the helix crus.

2.2.1.2.5　Helix Tubercle

The small prominence located on the posterior-superior portion of the helix.

2.2.1.2.6　Helix Cauda

The inferior part of the helix at the junction of the helix and the lobe.

2.2.1.2.7　Helix-Lobe Notch

The depression between the helix and the posterior rim of the lobe.

2.2.1.2.8　Anterior Groove of the Helix

The groove formed by the connection between the helix and the cheek.

2.2.1.3　Antihelix

2.2.1.3.1　Antihelix

The "Y" shape prominence, roughly opposite the helix, formed by the body of the antihelix, the superior antihelix crus, and the inferior antihelix crus.

2.2.1.3.2　Body of Antihelix

The principal, rough and vertical part of the antihelix.

2.2.1.3.3　Superior Antihelix Crus

The superior branch of the bifurcation of the antihelix.

2.2.1.3.4　Inferior Antihelix Crus

The inferior branch of the bifurcation of the antihelix.

2.2.1.3.5　Antihelix-Antitragus Notch

The depression between the antihelix and antitragus.

2.2.1.4　Scapha

The curved depression between the helix and the antihelix; the scaphoid fossa.

2.2.1.5　Triangular Fossa

The triangular depression bordered by the two antihelix crura and the helix.

2.2.1.6　Concha

2.2.1.6.1　Concha

The hollow area borders the orifice of the external auditory meatus. It is bordered by the helix, the antihelix, the tragus, and the antitragus; composed of the cymba conchae and the cavum conchae.

2.2.1.6.2　Cymba Conchae

The part of the concha superior to the helix crus.

2.2.1.6.3　Cavum Conchae

The part of the concha inferior to the helix crus.

2.2.1.7　Tragus

2.2.1.7.1　Tragus

The curved cartilaginous flap projecting lateral to the external auditory meatus.

2.2.1.7.2　Supratragic Notch

The depression between the tragus and the lower border of the helix crus.

2.2.1.7.3　Apex of the Upper Tragus

The superior prominence on the free rim of the tragus.

2.2.1.7.4　Apex of the Lower Tragus

The inferior prominence on the free rim of the tragus.

2.2.1.7.5　Anterior Groove of the Tragus

The shallow groove between the tragus and the cheek.

2.2.1.8　Antitragus

2.2.1.8.1　Antitragus

The flap opposite the tragus and superior to the ear lobe.

2.2.1.8.2　Apex of the Antitragus

The point at the free end of the antitragus.

2.2.1.8.3　Intertragic Notch

The depression between the tragus and antitragus.

2.2.1.9　Orifice of the External Auditory Meatus

The foramen anterior to the cavum conchae.

2.2.2　Posterior Surface of the Auricle

2.2.2.1　Back of the Helix

The flat area on the posteromedial surface of the auricle formed by the helix.

2.2.2.2　Back of the Helix Cauda

The flat area on the posteromedial surface of the auricle formed by the helix cauda.

2.2.2.3　Back of the Ear Lobe

The flat area on the posteromedial surface of the ear lobe.

2.2.2.4　Prominence of the Scapha

The prominence formed by the scapha on the posteromedial surface of the auricle.

2.2.2.5　Prominence of the Triangular Fossa

The prominence formed by the triangular fossa on the posteromedial surface of the auricle.

2.2.2.6　Prominence of the Cymba Conchae

The prominence formed by the cymba conchae on the posteromedial surface of the auricle.

2.2.2.7　Prominence of the Cavum Conchae

The prominence formed by the cavum conchae on the posteromedial surface of the auricle.

2.2.2.8　Groove of the Superior Antihelix Crus

The depression formed by the superior antihelix crus on the posteromedial surface of the auricle.

2.2.2.9　Groove of the Inferior Antihelix Crus

The depression formed by the inferior antihelix crus on the posteromedial surface of the auricle.

2.2.2.10　Groove of the Antihelix

The depression formed by the antihelix on the posteromedial surface of the auricle.

2.2.2.11　Groove of the Helix Crus

The depression formed by the helix crus on the posteromedial surface of the auricle.

2.2.2.12　Groove of the Antitragus

The depression formed by the antitragus on the posteromedial surface of the auricle.

2.2.3　Auricular Root

2.2.3.1　Superior Auricular Root

The highest part of the auricular attachment to the scalp.

2.2.3.2　Inferior Auricular Root

The lowest part of the auricular attachment where the ear lobe attaches to the cheek.