The Process Of Synaptic Transmission

Question 1

What 3 things must you write about when describing synaptic transmission?

Answer 1

The beginning, middle and end

Question 2

Where does the process of synaptic transmission begin?

Answer 2

In the presynaptic neuron

Question 3

What are electrical nerve impulses also called?

Answer 3

Action potentials

Question 4

Action potentials are sent down the axon until they reach the…

Answer 4

Presynaptic terminal

Question 5

Where are neurotransmitters stored?

Answer 5

In vesicles

Question 6

Where are neurotransmitters only found?

Answer 6

In the presynaptic neuron

Question 7

Where are neurotransmitters released into?

Answer 7

The synaptic cleft

Question 8

What is the synaptic cleft?

Answer 8

The gap between each neuron

Question 9

What concentration do neurotransmitters go from when they diffuse across the synapse?

Answer 9

A high to low concentration

Question 10

What do the neurotransmitters bind to?

Answer 10

Their specific receptor sites

Question 11

Where are receptor sites present?

Answer 11

On the postsynaptic neuron

Question 12

What is the theory called to describe neurotransmitters binding onto the post synaptic neuron?

Answer 12

Lock and key theory

Question 13

What are the two possible outcomes when enough neurotransmitters have attached to receptor sites?

Answer 13

1) the next neuron will fire an impulse
2) the neurotransmitters are recycled

Question 14

When will the next neurotransmitter fire depending on?

Answer 14

Whether it had an excitatory or inhibitory effect

Question 15

Where are neurotransmitters recycled back into?

Answer 15

Vesicles in the presynaptic neuron

Question 16

What is the process of neurotransmitters being recycled to be stored in vesicles in the presynaptic neuron called?

Answer 16

Reuptake

Question 17

What are neurotransmitters?

Answer 17

Chemical messages to the brain that can have an effect on the next neuron

Question 18

Neurotransmitters effects can be…

Answer 18

Excitatory of inhibitory

Question 19

What can be used to increase or decrease levels of neurotransmitters?

Answer 19

Drugs

Question 20

How do drugs increase or decrease neurotransmitter levels?

Answer 20

By increasing or decreasing the transmission of neurotransmitters across the synapse

Question 21

When the excitatory neurotransmitter binds to the post synaptic receptors the post synaptic cell become positively or negatively charged?

Answer 21

Positively charged

Question 22

What does an excitatory neurotransmitter make more likely?

Answer 22

That the post synaptic cell will fire so an impulse will travel down its axon, increasing brain activity in the central nervous system

Question 23

When the inhibitory neurotransmitter binds to the post synaptic receptors does the post synaptic cell become positively or negatively charged?

Answer 23

Negatively charged

Question 24

What to inhibitory neurotransmitters prevent or reduce?

Answer 24

The likelihood the post synaptic cell will fire, decreasing brain activity in the central nervous system

Question 25

When does summation occur?

Answer 25

When the excitatory and inhibitory influences are added together

Question 26

What is an example of an excitatory neurotransmitter?

Answer 26

Adrenaline

Question 27

What is an example of an inhibitory neurotransmitter?

Answer 27

Serotonin

Question 28

If the overall summation effect is inhibitory it reduces the likelihood that the neuron will…

Answer 28

Fire an impulse down the post synaptic neuron

Question 29

If the overall summation effect is excitatory then the neuron will be less likely to…

Answer 29

Fire an impulse down the post synaptic neuron