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Question

Which of the following is unpaired bone

A
Premaxilla
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B
Pro-otics
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C
Sphenethmoid
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D
Pterygoid
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Solution

The correct option is C Sphenethmoid
The sphenoid is an unpaired bone. It sits anteriorly in the cranium, and contributes to the middle cranial fossa, the lateral wall of the skull, and the floor and sides of both orbits. It has articulations with twelve other bones.
So, option C is the correct option.

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