synaptic transmission

Question 1

rely on intracellular proteins that allow ions to flow passively between cells, very fast and bidirectional

Answer 1

electrical synapses

Question 2

complex of 6 proteins that form a hemichannel - two hemichannels together forms a

Answer 2

gap junction

Question 3

what components does a chemical synapse have

Answer 3

synaptic cleft, vesicles, and granules as well as NTs and peptides

Question 4

electrical synapses have gap junctions where chemical have

Answer 4

active zones and pre and post synaptic membranes

Question 5

is there a synaptic delay in chemical synapses?

Answer 5

yes

Question 6

assymetrical, excitatory found on dendritic spines

Answer 6

grays spine I

Question 7

symmetrical, inhibitory found dendritic shafts

Answer 7

grays spine II

Question 8

first step in chemical synapse

Answer 8

transmitter is released and then stored in vesicles

Question 9

second step in chemical synapse

Answer 9

action potential invades presynaptic terminal

Question 10

third step in chemical synapse

Answer 10

depolarization of presynaptic terminal causes opening of voltage gated Ca 2+

Question 11

fourth step in chemical synapse

Answer 11

influx of Ca2+

Question 12

5 step in chemical synapse

Answer 12

ca causes vesicles to fuse with presynaptic membrane

Question 13

6 step in chemical synapse

Answer 13

transmitter is released

Question 14

7 step in chemical synapse

Answer 14

transmitter binds to receptor molecules in postsynaptic membranes

Question 15

8 step in chemical synapse

Answer 15

opening or closing of postsynaptic channels

Question 16

9 step in chemical synapse

Answer 16

postsynaptic current causes excitatory or inhibitory

Question 17

three criteria for identifying a NT

Answer 17

1. present within presynaptic neuron
2. released in response to presynaptic depolarization
3. specific receptors for NT on post synaptic cell

Question 18

NT produced in ___ ____

Answer 18

axon terminals

Question 19

enzymes needed for synthesis produced in cell body and must be transported to terminals via __ ___ __

Answer 19

slow axonal transport

Question 20

neuropeptides are loaded into granules in cell body and transported down axon via ____ ____ __

Answer 20

fast axonal transport

Question 21

cadmium is a __ ___ inhibitor

Answer 21

ca channel

Question 22

SNARE proteins in vesicles are

Answer 22

V-SNARES

Question 23

SNARE proteins in plasma membrane are

Answer 23

T-SNARES

Question 24

SNARE proteins do or do not bind Ca

Answer 24

do not

Question 25

Ca binds to _____ which leads to curvature of plasma membrane which brings membrane together

Answer 25

synaptotagmin

Question 26

tetanus and botulinum sever attachment of

Answer 26

SNARE proteins