Helicotrema

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Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology

Helicotrema

The cochlea and vestibule, viewed from above.
Latin	'
Gray's	subject #232 1050
System
MeSH	[1]
[[Image:\|190px\|center\|]]

The helicotrema is the part of the cochlear labyrinth where the scala tympani and the scala vestibuli meet. It is also known as the cochlear apex.

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Tympanic cavity	Labyrinthine wall/medial: Oval window · Round window • Secondary tympanic membrane • Prominence of facial canal • Promontory of tympanic cavity Membranous wall/lateral Mastoid wall/posterior: Mastoid cells • Aditus to mastoid antrum • Pyramidal eminence Carotid wall/anterior Tegmental wall/roof: Epitympanic recess Jugular wall/floor
Ossicles	Malleus (Neck of malleus, Superior ligament of malleus, Lateral ligament of malleus, Anterior ligament of malleus) · Incus (Superior ligament of incus, Posterior ligament of incus) · Stapes (Anular ligament of stapes)
Muscles	Stapedius · Tensor tympani
Eustachian tube	Bony part of pharyngotympanic tube · Cartilage of pharyngotympanic tube (Torus tubarius)