Signal

Question 1

Electrical synapse

Answer 1

Uses electrical signal to flow through gap junctions

Question 2

Gap junctions

Answer 2

Bridges to connect neurons

Question 3

Presynaptic cell

Answer 3

Axon terminals
Signal is coming from

Question 4

Synaptic cell

Answer 4

Space between pre and post

Question 5

Postsynaptic cell

Answer 5

Receives signal
Receptors on axon

Question 6

AP in axon terminal

Answer 6

Ca2+ channel opens
Ca2+ flow’s in
Triggering exocytosis
Diffuses with it
Binds with Receptors on post cell
Response in post cell

Question 7

Frequency modulation

Answer 7

Number of AP = Ca2+ releases
Stronger stimulus= more rate of APS

Question 8

Fast synaptic potential

Answer 8

Rapid, short duration
Binds to Opens chemically gated ion channels
Alters flow in/ out of post synaptic cell

Question 9

Slow synaptic potentials

Answer 9

Slower onset, long duration
Binds to G-protein coupled receptors
Alters membrane, modifies proteins, alters protein

Question 10

7 major classes

Answer 10

Acetylcholine
Amines
Amino acids
Peptides
Purines
Gases
Lipids

Question 11

Ligand

Answer 11

Chemical binding to another chemical

Question 12

Different ligands may bind to same receptor

Answer 12

One ligand may bind to different receptors

Question 13

Receptors down regulation

Answer 13

Drug tolerance
Decrease in receptor number

Question 14

Receptor upregulation

Answer 14

Neuronal damage
Increase in receptor number

Question 15

Signal Agonist

Answer 15

Activate receptors
Activates oxytocin receptors
Contractions

Question 16

Signal Antagonist

Answer 16

Block receptors action
Blocks progesterone induce abortion

Question 17

GABA B

Answer 17

Metrabotropic meditate slower

G-protein coupled receptor

2nd messenger mediated signal transduction

Question 18

GABA A
GABA C

Answer 18

Inotropic, fast response

Ligand gated Cl- channels

Lowers resting charge to -80mV