Antitragus: Definition from Answers.com

Antitragus

The auricula. Lateral surface.
Gray's	subject #229 1034

The antitragus is a feature of human ear anatomy. It is a small tubercle that points anteriorly. It is separated from the tragus by the intertragic notch.

External links

SUNY Labs 30:01-0105
lesson3 at The Anatomy Lesson by Wesley Norman (Georgetown University) (externalear) (#6)
Diagram at bodymodforums.com

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated.

Sensory system: Auditory and Vestibular systems

Auditory

Outer ear	Pinna (Helix, Antihelix, Tragus, Antitragus, Earlobe) • Ear canal

Middle ear	Eardrum (Umbo) • Ossicles (Malleus, Incus & Stapes) • muscles (Stapedius, Tensor tympani) • Eustachian tube (Torus tubarius)

Inner ear/Labyrinth	Vestibule • Membranous labyrinth Oval window → Scala vestibuli / Reissner's/vestibular membrane, Helicotrema and Scala tympani / Basilar membrane (Perilymph) → Round window Cochlea: Modiolus • Cochlear duct / scala media (Endolymph, Stria vascularis, Spiral ligament), Olivocochlear system Organ of Corti: Stereocilia • Tectorial membrane • Sulcus spiralis (externus, internus) • Limbus spiralis

To brain	Hair cells → Spiral ganglion → Cochlear nerve ^VIII → Cochlear nuclei → Trapezoid body → Superior olivary nuclei → Lateral lemniscus → Inferior colliculi → Medial geniculate nuclei → Auditory radiations → Primary auditory cortex

Vestibular

Inner ear/Labyrinth	Static/translations: Utricle (Macula) · Saccule (Macula, Endolymphatic sac, Endolymphatic duct) · Kinocilium · Otolith Kinetic/rotations: Semicircular canals (Superior, Posterior, Horizontal) • Cupula • Ampullae (Crista ampullaris)

To brain	Vestibular nerve ^VIII → Vestibular nuclei, Flocculonodular lobe Vestibular nuclei → Vestibulospinal tract, Ventral posterolateral nucleus → Vestibular cortex

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