Synaptic Transmission

Question 1

What is Synaptic Transmission

Answer 1

process by which one neuron communicates with another

Question 2

Step 1 Synaptic Transmission

Answer 2

-Action Potential arrives at pre-synaptic cleft in form of electrical signal

Question 3

Step 2 Synaptic Transmission

Answer 3

-Vesicles bind with membrane of presynaptic button

Question 4

Step 3 Synaptic Transmission

Answer 4

-Neurotransmitters are released where they can diffuse across the synaptic gap

Question 5

Step 4 Synaptic Transmission

Answer 5

-Neurotransmitters bind with their specific receptors found on the outer membrane of post synaptic button

Question 6

Step 5 Synaptic Transmission IF EXCITATORY

Answer 6

-If neurotransmitter is excitatory and enough neurotransmitters bind with receptors, action potential will be fired

Question 7

Step 5 Synaptic Transmission IF INHIBITORY

Answer 7

-If neurotransmitters inhibitory and enough neurotransmitters bind with receptors action potential will be prevented from firing

Question 8

Step 6 Synaptic Transmission

Answer 8

-Neurotransmitters ‚recycled’ by re-entering presynaptic button via re-uptake ports so that process can start again

Question 9

Define neurotransmitter

Answer 9

-chemical messenger that carries, boosts and modulates signals between neurons and other cells

Question 10

Excitatory Neurotransmitters

Answer 10

-have excitatory effects on neuron
-increase likelihood that neuron will fire action potential
-help attention and alertness
-triggered by daylight

Question 11

Inhibitory Neurotransmitters

Answer 11

-inhibitory effects on neuron
-decrease likelihood that neuron will fire action potential
-slow down neural activity
-triggered as light levels reduced

Question 12

Effects of drugs on synapse

Answer 12

-mimic neurotransmitters
-remain bound with receptor
-block neurotransmitters from reuptake

Question 13

Effect of drugs mimicking neurotransmitters

Answer 13

-increase level of neurotransmitter in synapse

Question 14

Effect of drugs remaining bound with receptors

Answer 14

-increase number of neurotransmitters tbat bind with receptors

Question 15

Effect of drugs blocking neurotransmitters from reuptake

Answer 15

-block from entering reuptake valve
-neurotransmitters remain in synapse for longer, prolonging effects