CMD 377 Lecture Notes - Lecture 22: Pupillary Light Reflex, Trigeminal Neuralgia, Inferior Rectus Muscle
14 Sep 2016
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Document Summary
Reflex: reflex changes that enable an object to be focused on the retina. Inability to move eye medially or laterally. Abnormal pupillary light reflex: absence of pupillary constriction. Diplopia when attempting to move eyes downward (difficulty in descending stairs and reading. Carries information concerning tactile, proprioceptive, pain, and temperature in the head. Douloureux): characterized by brief attacks of excruciating pain in the distribution of one or more divisions of nerve. Downward movement of the eye when in medial position. Innervates tensor tympani and other small muscles. Originate from the ipsilateral abducens nucleus: under facial colliculus. Innervate muscles of facial expression and stapedius. Facial motor nucleus involved in corneal blink reflex. Innervates stylopharyng eus muscle (elevation of pharynx during speech and swallowing) Innervate striated muscles of larynx, pharynx, and soft palate. Subserve taste on anterior 2/3 of tongue and palate. Unilateral upper motor neuron lesion: lower contralateral facial weakness. Unilateral lower motor neuron lesion: weakness in ipsilateral half of face.
