Synapses and Neurotransmitter

Question 1

What is a synapse?

Answer 1

Functional connection between a neuron and the cell signaling

Question 2

Neuromuscular junction

Answer 2

relationship between an neuron and muscle

Question 3

Synapse in the CNS

Answer 3

second post another neuron

Question 4

Synapse in the PNS

Answer 4

second postmuscle or gland

Question 5

Presynaptic neuron is

Answer 5

the neuron signaling another neuron

Question 6

Postsynaptic

Answer 6

The second neuron being signalled

Question 7

Electrical synapses use

Answer 7

Gap Junctions

Question 8

Chemical Synapses

Answer 8

Use neurotransmitter

Question 9

Where do electrical synapses occur

Answer 9

in smooth muscle, cardiac, between neurons of the brain and glial cells.

Question 10

In chemical synapses release a neurotransmitter from

Answer 10

the terminal buttons

Question 11

What are cell adhesion proteins

Answer 11

pre and post synaptic cells are held together

Question 12

release of a neurotransmitter (ca+)

Answer 12

Docking
Fusion
Exocytosis

Question 13

Ca++ and synaptic vesicle docking

Answer 13

vesicles are docked to the plasma membrane by SNARE proteins

Question 14

When Ca++ enter cell it binds to

Answer 14

synaptotagmin

Question 15

What does synaptotagmin complex

Answer 15

displaces part of the snare which fuses the vesicle to the membrane so exocitosis happens

Question 16

What is another word for Neurotransmitter

Answer 16

Ligand

Question 17

What is the action of the NT

Answer 17

to diffuse across the synapse where it binds to a specific receptor protein

Question 18

Excitatory Postsynaptic Potential (depolarization)

Answer 18

Opening Na+ or Ca++ channels

Question 19

Inhibitory Postsynaptic potetial (Hyperpolarization)

Answer 19

Opening K+ or Cl-

Question 20

EpSP

Answer 20

closer to threshold (depolarizes)

Question 21

IPSP

Answer 21

moves farther from threshold (hyperpolarizes)

Question 22

What is a summation of EpSp and IpSPs

Answer 22

Wether a AP occurs

Question 23

What is spatial summation

Answer 23

occurs due to convergence of signals into a single postsynaptic neuron

Question 24

What is temporal summation

Answer 24

due to successive waves of NT release over a short period of time

Question 25

What is convergence

Answer 25

several different presynaptic neurons (synapse on 1 postsynaptic neuron)

Question 26

What is divergence

Answer 26

axons have many branches so one presynaptic neuron can form synapses w/ several post synaptic neurons