BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Facial
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Abducens
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Trochlear
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Trigeminal
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Detailed explanation-1: -Cranial nerve 6 is a general somatic efferent nerve which innervates the lateral rectus muscle (extraocular). The abducens nerve originates from the brainstem and exits the skull via the superior orbital fissure.
Detailed explanation-2: -The abducens nerve originates from a set of neural cells that are found in the ventral aspect of the pons. It then emerges from the brainstem at the pontomedullary junction to enter the subarachnoid space, coursing upward between the pons and clivus to enter the Dorello canal.
Detailed explanation-3: -The abducens nerve emerges from the brainstem at the junction of the pons and the medulla, superior to the medullary pyramid, and medial to the facial nerve. It runs upwards and forwards from this position to reach the eye.