[TA] a transverse ridge continuing backward from the helix of the auricle, dividing the concha into an upper portion (cymba) and a lower portion (cavity of concha). Synonym(s): crus helicis [TA], crista helicis, limb of helix
crus of he·lix
(krūs hēliks) [TA] Transverse ridge continuing backward from helix of auricle, dividing the concha into an upper portion (cymba) and a lower (cavity of concha).