Retina Flashcards

1
Q

basal portion of retinal pigmented epithelium

A

infoldings adherent to basement membrane of Bruch’s membrane

-strong adhesion-

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2
Q

apical aspect of retinal pigmented epithelium

A

microvilli extending into layer of photoreceptors enveloping outer segment tips

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3
Q

melanosomes

A

pigment granules found heavily in RPE (densly in macula)

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4
Q

interphotoreceptor matrix composition

A

protiens and GAGs (glycosaminoglycans)

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5
Q

common location of retinal detachment

A

interphotoreceptor matrix

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6
Q

ellipsoid

A

part of inner segment that contains many mitochondria (nearer to outer segment)

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7
Q

myoid

A

Part of inner segment that is responsible for protein synthesis (nearer to cell body)

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8
Q

cilium

A

acts like a channel for plasmalemma- joins outer segment with inner segment (CONNECTING STALK)

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9
Q

outer segment

A

contains visual pigment molecules

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10
Q

outer fiber

A

extend from inner segment to cell body

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11
Q

inner fiber

A

Innermost portion of photoreceptor - runs inward from cell body and ends in specialized synaptic terminal containing vesicles

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12
Q

outer segment disks distinct from plasma membrane (cones or rods)

A

rod

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13
Q

outer segment disks are continuous with plasma membrane (cones or rods)

A

cones

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14
Q

rhodopsin

A

photosensitive pigment

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15
Q

spherule

A

rod

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16
Q

pedicle

A

cone

17
Q

420 nm

A

blue

18
Q

531 nm

A

green

19
Q

588 nm

A

red

20
Q

neurotransmitter of cones

A

glutamate

21
Q

communication between adjacent photoreceptors

A

gap junctions

22
Q

triad

A

horizontal and bipolar cells