- Shuffle
Toggle OnToggle Off
- Alphabetize
Toggle OnToggle Off
- Front First
Toggle OnToggle Off
- Both Sides
Toggle OnToggle Off
Front
How to study your flashcards.
Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key
Up/Down arrow keys: Flip the card between the front and back.down keyup key
H key: Show hint (3rd side).h key
PLAY BUTTON
PLAY BUTTON
15 Cards in this Set
- Front
- Back
|
Photoreceptors lie at the (back/front) of the retina.
|
back
|
|
(T/F) retina is a pigmented tissue.
|
F - retina itself is transparent. RPE is pigmented
|
|
Name all layers of the retina in order (9).
|
RPE - retinal pigment epithelium
OS - outer segment of photoreceptors IS - inner segment of photoreceptors ONL - outer nuclear layer OPL - outer plexiform layer INL - inner nuclear layer IPL - inner plexiform layer GCL - ganglion cell layer ONF - optic nerve fibers |
|
What type of cells in the ONL?
|
nuclei of photoreceptors
|
|
what type of cells in the OPL?
|
synapse between photoreceptors and 2' cells
|
|
what type of cells in the INL?
|
nuclei of horizontal, bipolar, and amacrine cells
|
|
what type of cells in the IPL?
|
synapse between bipolar and ganglion cells
|
|
what are optic nerve fibers?
|
axons of ganglion cells
|
|
where do Muller cells come into play?
|
outer/inner limiting membranes (major glial cells of retina)
|
|
Describe how photoreceptors are distributed in the retina
|
not evenly distributed
cones: v low density nasally/temporally; more cones present in periphery but more densely packed in fovea - no blue cones in fovea rods - more in periphery, none at fovea opposite density |
|
where are rods most densely packed?
|
15 degrees eccentrically
|
|
what is unique about the fovea?
|
- no blue cones
- no rods - no capillary bed present in the center - blood supply from choriocapillaris - retina thinnest here |
|
How many cones are present in each retina? Rods? Optic nerve fibers?
|
cones: 6 *10^6
rods: 130 *10^6 optic nerve fibers: 1.3 *10^6 |
|
Why is the retina said to have a dual blood supply?
|
central retinal artery and choriocapillaris supply afferent portion
efferent: central retinal vein + choriocapillaris |
|
where is the BRB located?
|
between choriocapillaris and retina
|
