Auditory pit

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Auditory pit
Section through the head of a human embryo, about twelve days old, in the region of the hind-brain.
Gray's	subject #228 1029
Precursor	auditory plate
Dorlands/Elsevier	p_21/12642810

The first rudiment of the internal ear 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]).

[edit] 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 As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e Prenatal development/Mammalian development of nervous system General neural development/ neurulation/neurula Notochord - Neuroectoderm - Neural plate - Neural folds - Neural groove Neural crest - Neural tube (Neuromere/Rhombomere, Cephalic flexure) Alar plate (sensory) - Basal plate (motor) Glioblast - Neuroblast Eye development Optic vesicles - Optic stalk - Optic cup - Lens placode Auditory development Auditory vesicle - Auditory pit Note: mostly ecoderm, but mesoderm is precursor for epineurium, perineurium, and endoneurium