Multiple choice

Which of the following is motor nerve?

  1. Vagus

  2. Abducens

  3. Olfactory

  4. Facial
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B Correct answer
Explanation

Abducens nerves are motor nerves which arise form ventral part of medulla oblongata, pass through respective Gasserian ganglia and innervate the posterior rectus muscle of eyes.
Facial nerves are mixed nerves arising form lateral part of medulla oblongata.
Vagus nerves are mixed nerves arising form lateral aspects of medulla oblongata.
Olfactory nerves are purely sensory nerves which transmit sensory impulses form the neurosensory epithelium of nasals chambers to olfactory lobes of brain. 

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