The Special Sense1

The Special Sense1 - The Special Senses retina Retina...

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The Special Senses retina • Retina contains rods and cones • Cones densely packed at fovea (center of the macula lutea) • Retinal pathway • Photoreceptors to bipolar cells to ganglion cells, to the brain via the optic nerve • Axons of ganglion cells converge at blind spot (optic disc) • Horizontal cells and amacrine cells modify the signal passed along the retinal neurons Eye anatomy • Ciliary body and lens divide the anterior cavity of the eye into posterior (vitreous) cavity and anterior cavity • Anterior cavity further divided • anterior chamber in front of eye • posterior chamber between the iris and the lens Fluids in the eye • Aqueous humor circulates within the eye • diffuses through the walls of anterior chamber • passes through canal of Schlemm • re-enters circulation • Vitreous humor fills the posterior cavity. • Not recycled – permanent fluid
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This note was uploaded on 11/22/2011 for the course BSC BSC1085 taught by Professor Sharonsimpson during the Fall '10 term at Broward College.

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The Special Sense1 - The Special Senses retina Retina...

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