The oldest of the truly coiled mammalian cochleae were approximately 4 mm in length.
2.
Odontocetes also have the highest neural investment of any cochleae reported to date with ratios of greater than 1500 ganglion cells / mm of basilar membrane.
3.
Another proposed derivation is from the Latin for the ventricles of the heart, " cochleae cordis ", where the second word is an inflected form of " cor ", heart, while " cochlea " is the Latin for snail.
4.
The cochlea ( plural is cochleae ) is a spiralled, hollow, conical chamber of bone, in which waves propagate from the " base " ( near the middle ear and the oval window ) to the " apex " ( the top or center of the spiral ).
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