HTHSCI 1H06 Lecture Notes - Lecture 30: Optician, Proprioception, Ciliary Muscle
29 Apr 2016
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Document Summary
Deep cerebellar nuclei send blueprint to cortex to initiate a coordinated movement, to spinal cord to maintain posture. Frontal cortex noti es cerebellum of intention to make a movement. Proprioceptors in muscles and tendons, visual input, and vestibular input inform cerebellum about position of body and limbs. Cerebellar cortex calculates best way to coordinate movement. 2. refractive media neural detection and transmission to brain. Normal vision depends on the shape of the cornea and sclera. Mucous membrane lines interior of eyelid and surface of sclera. Optic nerve: lind spot, all the ganglion cells leave, no photoreceptors in the optic nerve. No bulging csf - if it has pressure it would form a bulge. No cupping - if it has a cup, you"ve lost axons from the optic nerve that carry information to the brain. Monocular blindness: loss of vision in one eye (lesion to optic nerve or retina) Bitemporal blindness: loss of peripheral vision (lesion at optic nerve chiasm)
