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Oculomotor nucleus

Index Oculomotor nucleus

The fibers of the oculomotor nerve arise from a nucleus in the midbrain, which lies in the gray substance of the floor of the cerebral aqueduct and extends in front of the aqueduct for a short distance into the floor of the third ventricle. [1]

12 relations: Cerebral aqueduct, Cerebral peduncle, Edinger–Westphal nucleus, Midbrain, Oculomotor nerve, Pupil, Red nucleus, Substantia nigra, Superior colliculus, Tegmentum, Third ventricle, Vestibulo–ocular reflex.

Cerebral aqueduct

The cerebral aqueduct, also known as the aqueductus mesencephali, mesencephalic duct, sylvian aqueduct or the aqueduct of Sylvius is within the mesencephalon (or midbrain), contains cerebrospinal fluid (CSF), and connects the third ventricle in the diencephalon to the fourth ventricle within the region of the mesencephalon and metencephalon, located dorsal to the pons and ventral to the cerebellum.

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Cerebral peduncle

The cerebral peduncles are structures at the front of the midbrain which arise from the front of the pons and contain the large ascending (sensory) and descending (motor) nerve tracts that run to and from the cerebrum from the pons.

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Edinger–Westphal nucleus

The Edinger–Westphal nucleus (accessory oculomotor nucleus) is the parasympathetic pre-ganglionic nucleus that innervates the iris sphincter muscle and the ciliary muscle.

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Midbrain

The midbrain or mesencephalon (from Greek mesos 'middle', and enkephalos 'brain') is a portion of the central nervous system associated with vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation.

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Oculomotor nerve

The oculomotor nerve is the third cranial nerve.

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Pupil

The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina.

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Red nucleus

The red nucleus or nucleus ruber is a structure in the rostral midbrain involved in motor coordination.

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Substantia nigra

The substantia nigra (SN) is a basal ganglia structure located in the midbrain that plays an important role in reward and movement.

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Superior colliculus

The superior colliculus (Latin, upper hill) is a paired structure of the mammalian midbrain.

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Tegmentum

The tegmentum (from Latin for "covering") is a general area within the brainstem.

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Third ventricle

The third ventricle is one of four connected fluid-filled cavities comprising the ventricular system within the mammalian brain.

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Vestibulo–ocular reflex

The vestibulo-ocular reflex (VOR) is a reflex, where activation of the vestibular system causes eye movement.

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Redirects here:

Nucleus nervi oculomotorii, Nucleus of oculomotor nerve, Nucleus of the oculomotor nerve, Oculomotor complex, Oculomotor nuclei, Oculomotor nuclei complex.

References

[1] https://en.wikipedia.org/wiki/Oculomotor_nucleus

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