The middle ear and internal ear of mammals are enclosed in which of the following bones?

Mastoid

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Ethmoid

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Tympanic bulla

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Tympanic bulla and periotic bone (temporal bone)

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Solution

The correct option is D Tympanic bulla and periotic bone (temporal bone)
Tympanic bone and periotic bone (tympano-periotic complex TPC) enclose middle and inner ears of cetaceans surrounded by peribulbar sinuses composed of an insulating emulsion of mucus oil and air. It is enclosed in an enlarged auditory bulla.

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Similar questions

There are three small bones in the middle ear.

(a) Name the three bones.

(b) Which of these bones is in touch with oval window ?

(d) Which bone is in touch with the other two bones ?

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