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Flashcards in Block 2 Deck (42)
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1

GABAb channel is

metabotropic K+ channel

2

for summation we want a _____ space constant and _____ time constant

large
short

3

major regulatory step of dopamine synthesis

tyrosine to DOPA by tyrosine hydroxylase

4

dopa is converted to dopamine by

aromatic amino acid decarboxylase

5

3 major DA pathways

nigrostriatal, mesolimbic, and mesocorticolimbic

6

ecstasy is similar to amphetamine but it also causes

increased serotoin release

7

over release of serotonin from ecstasy leads to

oxidative stress by MAO

8

external stimuli are converted into ______ potentials that may be spontaneous or synaptic

generator

9

specialized endings of dorsal root ganglion cells

somatosensory receptors

10

specialized cells that transmit to afferent neurons

auditory, vestibular, and visual receptors

11

frequency of APs are a _______ function of stimulus intensity

non-linear

12

receptors that respond with an onset burst followed by a slow decline in both receptor potential and AP frequency

tonic receptors

13

sensory cortex contains columns that represent a ___________, with each column sensitive to a particular physical property

single modality

14

distinct pathways for modalities will arrange submodalities in parallel for ________

parallel processing`

15

2 types of horizontal cells

those that travel between bipolar cells and those that travel between receptor cells

16

______ cells sense motion

amacrine cells

17

when light strikes photoreceptors, ______ is cleaved to hyperpolarize the cell

cGMP

18

which bipolar cell conserves the sign of the response?

off center bipolar cells

19

pretectum does what?

reflex control of the pupil and lens

20

Superior colliculus organizes

eye movement

21

SCN and pretectum recieve input from

intrinsically photosensitive retinal ganglion cells

22

ipRGCs transduce light with

melanopsin

23

where do RGC's go after they cross optic chiasm

superior colliculus and LGN

24

large RGCs that recieve convergent input from rods in retinal periphery

magnoganglion cells

25

small RGCs that receive info from cones near retina foveal center

parvocellular cells

26

SC only gets visual input from ____ cells

rod

27

Meyer's loop

temporal radiation which passes through the temporal lobe. represents contralateral upper visual field

28

Optic radiation

represents contralateral lower visual field

29

superior visual field goes through inferior retina-->

inferior portion of LGN--> meyers loop --> inferior lip of calcarine sulcus

30

middle temporal pathway is the ______ pathway

where