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|Embryology: Otic pit|
|Section through the head of a human embryo, at the beginning of the fourth week, in the region of the hind-brain.|
|Gray's||subject #228 1029|
|Gives rise to|
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).
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