Question
Biology Question on neural control and coordination
Which of the following nerve is purely motor nerve?
A
Vagus
B
Abducens
C
Facial
D
Trigeminal
Answer
Abducens
Explanation
Solution
Cranial nerves originate from brain. These nerves are motor, sensory and mixed types.
Abducens is the smallest cranial nerve, it carries stimulus from brain to posterior rectus muscles of eye.
So, abducens is a purely motor Vagus, facial and trigeminal nerves are mixed cranial nerves, ie, they are both sensory and motor in function.