Process Of Synaptic Transmission

Question 1

What’s the beginning process of synaptic transmission?

Answer 1

Begins in presynaptic neuron, electrical nerve impulses sent down the axon until they reach the presynaptic terminal

Question 2

The synaptic transmission begins where

Answer 2

Presynaptic neuron

Question 3

Once the electrical nerve impulses are sent down the axon where do they go?

Answer 3

Presynaptic terminal

Question 4

What happens after the electrical nerve impulses reach the presynaptic terminal?

Answer 4

The neurotransmitters which are stored in vesicles and are only located in the presynaptic neuron, to be released into the synaptic cleft

Question 5

In synaptic transmission where are the neurotransmitters stored?

Answer 5

Vesicles

Question 6

Where are vesicles located?

Answer 6

Located in the presynaptic neuron

Question 7

What’s the gap between each neuron called?

Answer 7

Synaptic cleft

Question 8

Neurotransmitters diffuse across the…and then…with their specific… that are only present on the postsynaptic neuron

Answer 8

Synapse
Bind
Specific receptor sites

Question 9

Neurotransmitters diffuse across the synapse from what concentration?

Answer 9

High to low concentration

Question 10

What do the neurotransmitters bind to on the postsynaptic neuron?

Answer 10

Specific receptor sites (lock and key)

Question 11

Once enough neurotransmitters have attached to the receptor sites on the post synaptic neuron there are two possible outcomes:

Answer 11

The next neuron is ready to fire an impulse depending on whether the neurotransmitter has an excitatory or inhibitory effect.
OR
The neurotransmitters are recycled to be stored back in vesicles in the presynaptic neuron in a process called reuptake

Question 12

What’s reuptake?

Answer 12

Neurotransmitters are recycled to be stored back in vesicles in the presynaptic neuron.

Question 13

Excitatory neurotransmitters binds to the post synaptic …, the post synaptic cell becomes… This will make it more likely that the post synaptic cell will …. so an …. will travel down its…. This increases the …. activity in the …

Answer 13

Receptors
Positively charged
Fire
Impulse
Axon
Brain
CNS

Question 14

Excitatory neurotransmitters makes the post synaptic cell positively or negatively charged? What does this mean?

Answer 14

Positively
Makes it more likely that the post synaptic cell will fire so an impulse will travel down its axon

Question 15

Where does impulses travel down?

Answer 15

Axon

Question 16

What does excitatory neurotransmitters do to brain activity in the CNS?

Answer 16

Increases

Question 17

When inhibitory neurotransmitters …. to the ….. synaptic receptors the post synaptic cell becomes ….. charged this …. the likelihood that the post synaptic cell will …. This …. brain activity in the …..

Answer 17

Binds
Post
Negatively
Reduced
Fire
Decreases
CNS

Question 18

Inhibitory neurotransmitters cause the post synaptic cell to be positively or negatively charged? What does this mean?

Answer 18

Negatively
Reduces the likelihood that the post synaptic cell will fire

Question 19

What does inhibitory neurotransmitters do to brain activity in the CNS?

Answer 19

Decreases it

Question 20

When does summation occur?

Answer 20

When the excitatory and inhibitory influences are added together

Question 21

In summation if the overall effect is mainly inhibitory what does this mean?

Answer 21

Reduced the likelihood the neuron will fire an impulse down the post synaptic neuron

Question 22

If the overall effect is excitatory what does this mean?

Answer 22

The impulse will fire down the post synaptic neuron