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Edinger-Westphal nucleus
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Edinger-Westphal nucleus

anatomy

Learn about this topic in these articles:

function in optical lens system

  • cross section of the human eye
    In human eye: Nerve action

    …in the midbrain called the Edinger-Westphal nucleus; the fibres have a relay point in the ciliary ganglion in the eye socket, and the postganglionic fibres enter the eye as the short ciliary nerves. The stimulus for accommodation is the nearness of the object, but the manner in which this nearness…

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structure of oculomotor nerve

  • nervous system
    In human nervous system: Oculomotor nerve (CN III or 3)

    …superious muscle, and (2) the Edinger-Westphal nucleus, which projects general visceral efferent preganglionic fibers to the ciliary ganglion.

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  • nervous system
    In human nervous system: The eye

    …preganglionic neurons located in the Edinger-Westphal nucleus of the midbrain. The axons of these neurons exit the ventral surface of the midbrain and synapse in the ciliary ganglion. From there, parasympathetic postganglionic neurons innervate the pupillary sphincter muscle, causing constriction.

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