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Question

Middle ear and eustachian tube of rabbit originates from

A
Ectoderm
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B
Endoderm
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C
Mesoderm
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D
All of the above
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Solution

The correct option is B Endoderm
The endoderm lines the future auditory tube (eustachian tube), middle ear, mastoid antrum, and inner layer of the tympanic membrane.

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