ANAT 102 Lecture Notes - Lecture 17: Membrane Potential, Intraocular Pressure, Neurotransmitter
22 Feb 2017
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Where blood vessel can be viewed directly. Recieves light and converts it into nerve impulses via optic nerves to the brain. Optic disk: where the optic (ii) nerve leaves the eyeball to the brain. Aka the blind spot since it has no rods or cones. Fovea centralis: highest visual acuity (resolution) and concentration of cones. Where you focus on images of interest. Processes visual data extensively before sending nerve impulses into axons of the optic nerve. Rods and cones have photopigments for the absorption of light. Contain rhodopsin photopigment and allow us to see in dim light. Produce color vision from stimulation of the 3 cones. Three types: blue, red, and green cones. Has the horizontal and amacrine cells that modify the signals transmitted along the pathway from photoreceptors to bipolar cells to ganglion cells. Cells exit the eyeball as the optic nerve (ii) and go to the optic disk.
