BRAIN
CRANIAL NERVES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Trochlear
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Occulomotor
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Optic
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Olfactory
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Detailed explanation-1: -The oculomotor nerve is the third cranial nerve (CN III). It allows movement of the eye muscles, constriction of the pupil, focusing the eyes and the position of the upper eyelid. Cranial nerve III works with other cranial nerves to control eye movements and support sensory functioning.
Detailed explanation-2: -The oculomotor nerve (CNIII) innervates the main upper eyelid retractor, the levator palpebrae superiorus, via its superior branch. The inferior division of CNIII also innervates the inferior rectus muscle, which by extension via the capsulopalpebral fascia causes lower eyelid retraction in downgaze.
Detailed explanation-3: -Lens: The lens is a clear part of the eye behind the iris that helps to focus light and images on the retina.
Detailed explanation-4: -The oculomotor nerve controls important muscles in your eye. It allows you to look up and down, fixate your gaze on a moving object, and perform other important eye movements. Each cranial nerve splits into two branches.