NROC64H3 Chapter Notes - Chapter 10: Magnocellular Cell, Ocular Dominance Column, Optic Chiasm
Document Summary
Retinofugal projection- neural pathway that starts at optic nerve. (going away from center) Ganglion cell axons fleeing the retina pass through 3 structures before they synapse on the brain stem: the optic nerve, the optic chiasm and the optic tract. Optic nerves- exit the left and right eye at fatty disks, travel through fatty tissue behind eyes and pass through holes in the skill. They form an x to form the optic chiasm which is at the base of the brain, anterior to the pituitary. At optic chiasm, axons originating in the nasal retinas cross from one side to the other. Decussation- a crossing of fibre from one side of the brain to the other. This is only a partial decussation- only axons originating in the nasal retinas cross. Then the axons form optic tracts and run under the pia along lateral surface of the diencephalon.
