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Multiple choice zoology nervous system of man pns divisions of nervous system peripheral nervous system

The $3^{rd}, 6^{th} and 11^{th}$ cranial nerves are respectively

  1. oculomotor, abducens and accessory

  2. oculomotor, trigeminal and accessory

  3. optic, facial and accessory

  4. trochlear, abducens and vagus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In higher vertebrates (reptiles, birds, mammals) there are 12 pairs of cranial nerves- olfactory (I), optic (II), oculomotor (III), trochlear (IV), trigeminal (V), abducens (VI), facial (VII), vestibulocochlear (VIII), glossopharyngeal (IX), vagus (X), accessory (XI), and hypoglossal (XII).

Multiple choice zoology nervous system of man pns divisions of nervous system peripheral nervous system

The vagus nerve is the _______ cranial nerve.

  1. $7^{th}$
  2. $5^{th}$
  3. $10^{th}$
  4. $9^{th}$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The vagus nerve historically cited as the pneumogastric nerve, is the tenth cranial nerve or CN X, and interfaces with parasympathetic control of the heart, lungs, and digestive tract. The vagus nerves are paired but are normally referred to in the singular. It is the longest nerve of the autonomic nervous system in the human body.


So the correct option is '10th'.