6.2: The process of synaptic transmission

Question 1

Explain the process of synaptic transmission (4 marks)

Answer 1

Synaptic transmission involves impulses crossing a synapse between an axon terminal and the adjacent neuron

Question 2

Explain the process of synaptic transmission (4 marks).

Synaptic transmission involves impulses crossing a synapse between an axon terminal and the adjacent neuron.

Answer 2

Neurotransmitters are chemicals released from vesicles on the presynaptic neuron from tiny sacs called synaptic vesicles

Question 3

Explain the process of synaptic transmission (4 marks).
Synaptic transmission involves impulses crossing a synapse between an axon terminal and the adjacent neuron.
Neurotransmitters are chemicals released from vesicles on the presynaptic neuron from tiny sacs called synaptic vesicles.

Answer 3

They travel across the synapse and lock onto receptor sites on the postsynaptic neuron

Question 4

Explain the process of synaptic transmission (4 marks).
Synaptic transmission involves impulses crossing a synapse between an axon terminal and the adjacent neuron.
Neurotransmitters are chemicals released from vesicles on the presynaptic neuron from tiny sacs called synaptic vesicles.
They travel across the synapse and lock onto receptor sites on the postsynaptic neuron.

Answer 4

Some neurotransmitters increase the rate of firing in the receiving neurons (excitatory) and others decrease the rate of firing (inhibitory)

Question 5

Briefly outline how excitation and inhibition are involved in synaptic transmission (4 marks)

Answer 5

Neurotransmitters can be excitatory or inhibitory

Question 6

Briefly outline how excitation and inhibition are involved in synaptic transmission (4 marks).
Neurotransmitters can be excitatory or inhibitory.

Answer 6

Most can be both, but GABA is purely inhibitory

Question 7

Briefly outline how excitation and inhibition are involved in synaptic transmission (4 marks).
Neurotransmitters can be excitatory or inhibitory.
Most can be both, but GABA is purely inhibitory.
If the neurotransmitter is excitatory, then what?

Answer 7

If the neurotransmitter is excitatory, then the post synaptic neuron is more likely to fire an impulse

Question 8

Briefly outline how excitation and inhibition are involved in synaptic transmission (4 marks).
Neurotransmitters can be excitatory or inhibitory.
Most can be both, but GABA is purely inhibitory.
If the neurotransmitter is excitatory, then the post synaptic neuron is more likely to fire an impulse.
If the neurotransmitter is inhibitory, then what?

Answer 8

If the neurotransmitter is inhibitory, then the post synaptic neuron is less likely to fire an impulse

Question 9

Briefly outline how excitation and inhibition are involved in synaptic transmission (4 marks).
Neurotransmitters can be excitatory or inhibitory.
Most can be both, but GABA is purely inhibitory.
If the neurotransmitter is excitatory, then the post synaptic neuron is more likely to fire an impulse.
If the neurotransmitter is inhibitory, then the post synaptic neuron is less likely to fire an impulse.

Answer 9

The excitatory and inhibitory influences are summed

Question 10

Briefly outline how excitation and inhibition are involved in synaptic transmission (4 marks).
Neurotransmitters can be excitatory or inhibitory.
Most can be both, but GABA is purely inhibitory.
If the neurotransmitter is excitatory, then the post synaptic neuron is more likely to fire an impulse.
If the neurotransmitter is inhibitory, then the post synaptic neuron is less likely to fire an impulse.
The excitatory and inhibitory influences are summed and what?

Answer 10

The excitatory and inhibitory influences are summed and if the net effect on the post synaptic neuron is inhibitory, the neuron will be less likely to ‘fire’

Question 11

Briefly outline how excitation and inhibition are involved in synaptic transmission (4 marks).
Neurotransmitters can be excitatory or inhibitory.
Most can be both, but GABA is purely inhibitory.
If the neurotransmitter is excitatory, then the post synaptic neuron is more likely to fire an impulse.
If the neurotransmitter is inhibitory, then the post synaptic neuron is less likely to fire an impulse.
The excitatory and inhibitory influences are summed and if the net effect on the post synaptic neuron is inhibitory, the neuron will be less likely to ‘fire’ and what?

Answer 11

The excitatory and inhibitory influences are summed and if the net effect on the post synaptic neuron is inhibitory, the neuron will be less likely to ‘fire’ and if the net effect is excitatory, the neuron will be more likely to fire