COGS 17 Midterm 2 questions well
answered to pass
RODS or CONES: More photopigment - correct answer ✔✔rods
RODS or CONES: Relatively low sensitivity - correct answer ✔✔cones
RODS or CONES: High acuity - correct answer ✔✔cones
RODS or CONES: High convergence - correct answer ✔✔rods
RODS or CONES: Concentrated in fovea - correct answer ✔✔cones
RODS or CONES: 3 kinds, per type of photopigment - correct answer ✔✔cones
RODS or CONES: Best for motion detection - correct answer ✔✔rods
RODS or CONES: Best for color discrimination - correct answer ✔✔Cones
TRUE or FALSE: All photopigment molecules are made up of an opsin and a retinal.
- correct answer ✔✔True
TRUE or FALSE: The opsin component absorbs the energy of the light, changing its
configuration. - correct answer ✔✔False
,TRUE or FALSE: Photopigment naturally regenerates to its original form in the
dark. - correct answer ✔✔True
TRUE or FALSE: When you have become totally "light adapted", your
photopigment includes "11-cis retinal" - correct answer ✔✔False
TRUE or FALSE: In response to light, "second messengers" in the receptors open
ion gates, increasing the amount of NT released. - correct answer ✔✔False - They
close the gates rather than open.
RETINA CELLS: Release inhibitory NT - correct answer ✔✔Cones
RETINA CELLS: Release excitatory NT - correct answer ✔✔Ganglions
RETINA CELLS: Again, release inhibitory NT - correct answer ✔✔Rods
RETINA CELLS: Axons form the optic nerve - correct answer ✔✔Ganglions
RETINA CELLS: Show spontaneous firing. - correct answer ✔✔Bipolars
RETINA CELLS: Show action potentials. - correct answer ✔✔Ganglions
RETINA CELLS: Show graded potentials - correct answer ✔✔Interneurons
CONNECTIVITY PATTERNS: Cones in the fovea - correct answer ✔✔Few:1
, CONNECTIVITY PATTERNS: Required for high sensitivity - correct answer
✔✔Many:1
CONNECTIVITY PATTERNS: Typical of rods - correct answer ✔✔Many:1
CONNECTIVITY PATTERNS: Results in low acuity - correct answer ✔✔Many:1
CONNECTIVITY PATTERNS: Synonymous with low convergence - correct answer
✔✔Few:1
CONNECTIVITY PATTERNS: Corresponds to a large receptive field - correct answer
✔✔Many:1
TRUE or FALSE (Visual Ganglions w/ Excitatory center-Inhibitory Surround
Receptive Field): Light falling only on the surround produces the strongest
response. - correct answer ✔✔False
TRUE or FALSE (Visual Ganglions w/ Excitatory center-Inhibitory Surround
Receptive Field): Light falling on both center and surround produces a medium
level of response. - correct answer ✔✔True
TRUE or FALSE (Visual Ganglions w/ Excitatory center-Inhibitory Surround
Receptive Field): Light on the center is more likely to result in an action potential
than light on the surround. - correct answer ✔✔True
answered to pass
RODS or CONES: More photopigment - correct answer ✔✔rods
RODS or CONES: Relatively low sensitivity - correct answer ✔✔cones
RODS or CONES: High acuity - correct answer ✔✔cones
RODS or CONES: High convergence - correct answer ✔✔rods
RODS or CONES: Concentrated in fovea - correct answer ✔✔cones
RODS or CONES: 3 kinds, per type of photopigment - correct answer ✔✔cones
RODS or CONES: Best for motion detection - correct answer ✔✔rods
RODS or CONES: Best for color discrimination - correct answer ✔✔Cones
TRUE or FALSE: All photopigment molecules are made up of an opsin and a retinal.
- correct answer ✔✔True
TRUE or FALSE: The opsin component absorbs the energy of the light, changing its
configuration. - correct answer ✔✔False
,TRUE or FALSE: Photopigment naturally regenerates to its original form in the
dark. - correct answer ✔✔True
TRUE or FALSE: When you have become totally "light adapted", your
photopigment includes "11-cis retinal" - correct answer ✔✔False
TRUE or FALSE: In response to light, "second messengers" in the receptors open
ion gates, increasing the amount of NT released. - correct answer ✔✔False - They
close the gates rather than open.
RETINA CELLS: Release inhibitory NT - correct answer ✔✔Cones
RETINA CELLS: Release excitatory NT - correct answer ✔✔Ganglions
RETINA CELLS: Again, release inhibitory NT - correct answer ✔✔Rods
RETINA CELLS: Axons form the optic nerve - correct answer ✔✔Ganglions
RETINA CELLS: Show spontaneous firing. - correct answer ✔✔Bipolars
RETINA CELLS: Show action potentials. - correct answer ✔✔Ganglions
RETINA CELLS: Show graded potentials - correct answer ✔✔Interneurons
CONNECTIVITY PATTERNS: Cones in the fovea - correct answer ✔✔Few:1
, CONNECTIVITY PATTERNS: Required for high sensitivity - correct answer
✔✔Many:1
CONNECTIVITY PATTERNS: Typical of rods - correct answer ✔✔Many:1
CONNECTIVITY PATTERNS: Results in low acuity - correct answer ✔✔Many:1
CONNECTIVITY PATTERNS: Synonymous with low convergence - correct answer
✔✔Few:1
CONNECTIVITY PATTERNS: Corresponds to a large receptive field - correct answer
✔✔Many:1
TRUE or FALSE (Visual Ganglions w/ Excitatory center-Inhibitory Surround
Receptive Field): Light falling only on the surround produces the strongest
response. - correct answer ✔✔False
TRUE or FALSE (Visual Ganglions w/ Excitatory center-Inhibitory Surround
Receptive Field): Light falling on both center and surround produces a medium
level of response. - correct answer ✔✔True
TRUE or FALSE (Visual Ganglions w/ Excitatory center-Inhibitory Surround
Receptive Field): Light on the center is more likely to result in an action potential
than light on the surround. - correct answer ✔✔True
