Otic pit

Otic pit
Otic pit
Gray898.png
Section through the head of a human embryo, at the beginning of the fourth week, in the region of the hind-brain.
Latin fovea otica
Gray's subject #228 1029
Precursor auditory plate
Code TE E5.15.2.0.0.0.5

The auditory pit, also known as the otic pit, is the first rudiment of the internal ear. It appears shortly after that of the eye, in the form of a patch of thickened ectoderm, the auditory plate, over the region of the hind-brain. The auditory plate becomes depressed and converted into the auditory pit (or otic pit[1]).

References

  1. ^ hednk-010 — Embryology at UNC

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 As such, some of the information contained within it may be outdated.

v · d · ePrenatal development/Mammalian development of nervous system (GA 9.733 and GA 10.1002, TE E5.13-16)
Neurogenesis
Cranial neural crest (Cardiac neural crest complex) · Truncal neural crest
Eye development
Auditory development
note: NS is mostly ectoderm, but mesoderm is precursor for epineurium, perineurium, and endoneurium

M: CNS

anat(n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco(m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug(N1A/2AB/C/3/4/7A/B/C/D)

M: EYE

anat(g/a/p)/phys/devp/prot

noco/cong/tumr, epon

proc, drug(S1A/1E/1F/1L)

M: EAR

anat(e/p)/phys/devp

noco/cong, epon

proc, drug(S2)

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Look at other dictionaries:

  • otic pit — n AUDITORY PIT * * * a distinct depression appearing in each otic placode, marking the beginning of embryonic development of the internal ear. Called also auditory p. and otic depression …   Medical dictionary

  • Otic placode — Latin placoda otica Code TE E5.15.2.0.0.0.4 In embryology, the otic placode is a thickening of the ectoderm on the outer surface of a developing embryo from which the ear develops. The ear, including both the vestibular system and the auditory… …   Wikipedia

  • Otic vesicle — Embryo between eighteen and twenty one days …   Wikipedia

  • otic vesicle — n AUDITORY VESICLE * * * a detached ovoid sac formed by closure of the otic pit in embryonic development of the external ear; called also acoustic or auditory v …   Medical dictionary

  • pit — 1. SYN: fovea. 2. One of the pinhead sized depressed scars following the pustule of acne, chickenpox, or smallpox (pockmark). 3. A sharp pointed depression in the enamel surface of a tooth, due to faulty or incomplete …   Medical dictionary

  • otic depression — see under pit …   Medical dictionary

  • auditory pit — n the indentation of thickened surface ectoderm that forms the embryonic ear called also otic pit * * * otic p …   Medical dictionary

  • Auditory pit — Infobox Embryology Name = PAGENAME Latin = GraySubject = 228 GrayPage = 1029 Caption = Section through the head of a human embryo, about twelve days old, in the region of the hind brain. Caption2 = System = CarnegieStage = Precursor = auditory… …   Wikipedia

  • Embryology — 1 morula, 2 blastula 1 blastula, 2 gastrula with blastopor …   Wikipedia

  • Neurulation — Neuroscience portal Transve …   Wikipedia

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