Nov. 12 pt.2 Flashcards

1
Q

photoreceptors able to sense light

A

rods and cones

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2
Q

ganglion cells

A

projection neurons of retina, output cells; send info to CNS

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3
Q

visual tsduction pathway is from

A

photoreceptor cells, ie rods and cones, bipolar cells, ganglion cells

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4
Q

bipolar and photoreceptor cells are

A

neurons which do not fire action potentials

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5
Q

cell(s) of visual tsduction pathwaythat fire action potentials

A

ganlgion to CNS/thalamus

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6
Q

Type of synapse between photoreceptor cells and bipolar cells

A

glutamatergic

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7
Q

function of horiztonal cells

A

make signals sharper through lateral inhibition

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8
Q

optic nerve

A

bundle of axons of ganglion cells

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9
Q

can artificially divide photoreceptor cells into these three anatomical and functional compartments

A
  1. outer segment 2. inner segment 3. synaptic terminal
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10
Q

inner segment has

A

cell body w/ intracellular organelles such as mitochondria and ion channels for NT release

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11
Q

outer segment contains

A

discs

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12
Q

discs contain

A

receptor molecules that can react to photons

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13
Q

difference between discs in rods and cones

A

in rods, they are intracellular membranous comparments disconnected from membrane. In cones, they are invaginatios of plasma membrane

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14
Q

has somewhat more discs

A

rods

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15
Q

specific types of cones

A

S, M, L: short-wave, middle-wave, long-wave

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16
Q

why do diffnt types of cone cells respond to diffnt wavelengths?

A

diffnt photosensitive molecules

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17
Q

photoreceptors able to sense light

A

rods and cones

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18
Q

ganglion cells

A

projection neurons of retina, output cells; send info to CNS

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19
Q

visual tsduction pathway is from

A

photoreceptor cells, ie rods and cones, bipolar cells, ganglion cells

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20
Q

bipolar and photoreceptor cells are

A

neurons which do not fire action potentials

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21
Q

cell(s) of visual tsduction pathwaythat fire action potentials

A

ganlgion to CNS/thalamus

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22
Q

Type of synapse between photoreceptor cells and bipolar cells

A

glutamatergic

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23
Q

function of horiztonal cells

A

make signals sharper through lateral inhibition

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24
Q

optic nerve

A

bundle of axons of ganglion cells

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25
Q

can artificially divide photoreceptor cells into these three anatomical and functional compartments

A
  1. outer segment 2. inner segment 3. synaptic terminal
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26
Q

inner segment has

A

cell body w/ intracellular organelles such as mitochondria and ion channels for NT release

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27
Q

outer segment contains

A

discs

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28
Q

discs contain

A

receptor molecules that can react to photons

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29
Q

difference between discs in rods and cones

A

in rods, they are intracellular membranous comparments disconnected from membrane. In cones, they are invaginatios of plasma membrane

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30
Q

has somewhat more discs

A

rods

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31
Q

specific types of cones

A

S, M, L: short-wave, middle-wave, long-wave

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32
Q

why do diffnt types of cone cells respond to diffnt wavelengths?

A

diffnt photosensitive molecules

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33
Q

photoreceptors able to sense light

A

rods and cones

34
Q

ganglion cells

A

projection neurons of retina, output cells; send info to CNS

35
Q

visual tsduction pathway is from

A

photoreceptor cells, ie rods and cones, bipolar cells, ganglion cells

36
Q

bipolar and photoreceptor cells are

A

neurons which do not fire action potentials

37
Q

cell(s) of visual tsduction pathwaythat fire action potentials

A

ganlgion to CNS/thalamus

38
Q

Type of synapse between photoreceptor cells and bipolar cells

A

glutamatergic

39
Q

function of horiztonal cells

A

make signals sharper through lateral inhibition

40
Q

optic nerve

A

bundle of axons of ganglion cells

41
Q

can artificially divide photoreceptor cells into these three anatomical and functional compartments

A
  1. outer segment 2. inner segment 3. synaptic terminal
42
Q

inner segment has

A

cell body w/ intracellular organelles such as mitochondria and ion channels for NT release

43
Q

outer segment contains

A

discs

44
Q

discs contain

A

receptor molecules that can react to photons

45
Q

difference between discs in rods and cones

A

in rods, they are intracellular membranous comparments disconnected from membrane. In cones, they are invaginatios of plasma membrane

46
Q

has somewhat more discs

A

rods

47
Q

specific types of cones

A

S, M, L: short-wave, middle-wave, long-wave

48
Q

why do diffnt types of cone cells respond to diffnt wavelengths?

A

diffnt photosensitive molecules

49
Q

photoreceptors able to sense light

A

rods and cones

50
Q

ganglion cells

A

projection neurons of retina, output cells; send info to CNS

51
Q

visual tsduction pathway is from

A

photoreceptor cells, ie rods and cones, bipolar cells, ganglion cells

52
Q

bipolar and photoreceptor cells are

A

neurons which do not fire action potentials

53
Q

cell(s) of visual tsduction pathwaythat fire action potentials

A

ganlgion to CNS/thalamus

54
Q

Type of synapse between photoreceptor cells and bipolar cells

A

glutamatergic

55
Q

function of horiztonal cells

A

make signals sharper through lateral inhibition

56
Q

optic nerve

A

bundle of axons of ganglion cells

57
Q

can artificially divide photoreceptor cells into these three anatomical and functional compartments

A
  1. outer segment 2. inner segment 3. synaptic terminal
58
Q

inner segment has

A

cell body w/ intracellular organelles such as mitochondria and ion channels for NT release

59
Q

outer segment contains

A

discs

60
Q

discs contain

A

receptor molecules that can react to photons

61
Q

difference between discs in rods and cones

A

in rods, they are intracellular membranous comparments disconnected from membrane. In cones, they are invaginatios of plasma membrane

62
Q

has somewhat more discs

A

rods

63
Q

specific types of cones

A

S, M, L: short-wave, middle-wave, long-wave

64
Q

why do diffnt types of cone cells respond to diffnt wavelengths?

A

diffnt photosensitive molecules

65
Q

photoreceptors able to sense light

A

rods and cones

66
Q

ganglion cells

A

projection neurons of retina, output cells; send info to CNS

67
Q

visual tsduction pathway is from

A

photoreceptor cells, ie rods and cones, bipolar cells, ganglion cells

68
Q

bipolar and photoreceptor cells are

A

neurons which do not fire action potentials

69
Q

in visual tsduction pathway, action potentials are fired by:

A

ganlgion to CNS/thalamus

70
Q

Type of synapse between photoreceptor cells and bipolar cells

A

glutamatergic

71
Q

function of horiztonal cells

A

make signals sharper through lateral inhibition

72
Q

optic nerve

A

bundle of axons of ganglion cells

73
Q

can artificially divide photoreceptor cells into these three anatomical and functional compartments

A
  1. outer segment 2. inner segment 3. synaptic terminal
74
Q

inner segment has

A

cell body w/ intracellular organelles such as mitochondria and ion channels for NT release

75
Q

outer segment contains

A

discs

76
Q

discs contain

A

receptor molecules that can react to photons

77
Q

difference between discs in rods and cones

A

in rods, they are intracellular membranous comparments disconnected from membrane. In cones, they are invaginatios of plasma membrane

78
Q

has somewhat more discs

A

rods

79
Q

specific types of cones

A

S, M, L: short-wave, middle-wave, long-wave

80
Q

why do diffnt types of cone cells respond to diffnt wavelengths?

A

diffnt photosensitive molecules