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Abducens
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∙ 13y ago
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Function of abducens nerve?
Causes abduction of the eyeball. So named: abducens nerve
What is an abducent nerve?
An abducent nerve is a nerve which controls the lateral rectus muscle in the eye.
What abducts the eye?
The lateral rectus muscle, innervated by the 6th cranial nerve (the Abducens)
What is six nerve palsy of the eyes?
the 6th cranial supply the lateral rectus muscle of the eye. It allow the eyeball to turn out. if you have the nerve palsy of this nerve, your eyeball cannot be turned out.
What cranial nerve is responsible for moving the eye laterally?
There are three cranial nerves that innervates muscle to move the eye. The main cranial nerve that controls eye movement is occulomotor nerve (CN III). It is responsible for inferior rectus, superior rectus, medial rectus, and inferior oblique. Lateral rectus muscle is innervated by abducens nerve (CN VI). Superior oblique muscle is innervated by trochlear nerve (CN III).
Which of the external eye muscles is controlled by cranial nerve VI?
lateral rectus
What nerve governs most of the extrinsic eye muscle?
Trochlear Nerve innervates Superior Oblique(extrinsic eye muscle)Oculomotor Nerve innervates Inferior Oblique, Superior Rectus, Inferior Rectus, and Medial Rectus (which are all extrinsic eye muscles) along with Ciliary Body, and the Iris (which are both intrinsic eye muscles)Abducens Nerve innervates Lateral Rectus(extrinsic eye muscle)
What Muscle rolls the eyeball downward?
Trick question! Inferior Rectus and Superior Oblique. You sneaky person you :)
What nerve causes the motion of the eye so that the motion of one eye moves the other?
The nerve that supply the motor function of the eyeballs are the occulomotor nerve (cranial nerve III), trochlear nerve (cranial nerve IV) and the abducen nerve (cranial nerve VI). All the muscle that move the eyeballs supplied by the occulomotor nerve except the lateral rectus of the eyes which is supplied by the abducen nerve and the superior oblique muscle of the eyes which is supplied by the trochlear nerve.
Trochlear nerve conveys proprioceptor impulses from the medial rectus muscle to the brain?
false....SUPERIOR OBLIQUE MUSCLE
Which muscle rolls the eyeball upward?
Primarily the superior rectus muscle rotates the eye into upwards gaze.However, if the eye is turned towards the nose (facing intwards) then the inferior oblique muscle does much of the elevation.
Which cranial nerve is damaged due to a medial strabismus injury?
Medial strabismus is caused by cranial nerve damage. There is no such thing as a medial strabismus injury that causes a nerve to be damaged, rather the damaged nerve causes strabismus. A strabismus refers to the misalignment of the eyes or a deviation in gaze. A medial strabismus would be the result of damage to the abducens nerve (cranial nerve VI). CNVI innervates the lateral rectus muscle of the eye, which pulls the eye laterally. Therefore, if this nerve is damaged, the eye is no longer able to pull laterally, and the tonus of the medial rectus muscle acts unopposed. This pulls the eye medially, causing medial strabismus.
