THORAX ABDOMEN AND PELVIS

MEDICAL

NERVES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Oculomotor, trochlear, and abducens nerves (3, 4, 6)
A
concerned with vision
B
regulates voluntary movements of eyelid/eyeball/pupil constriction
C
pain of the eye; blinking
D
governs swallowing
Explanation: 

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 helps to adjust and coordinate eye position during movement. Several movements assist with this process: saccades, smooth pursuit, fixation, accommodation, vestibulo-ocular reflex, and optokinetic reflex.

Detailed explanation-3: -Cranial nerve 4, also called the trochlear nerve, controls the movement of the superior oblique muscle. This muscle moves the eye down and rotates the top of the toward the nose. It also helps pull the eye outward when the eye is looking downward.

There is 1 question to complete.