Problems With Synapses 3

Question 1

What are 3 ways neurotransmitters are removed

Answer 1

3 ways neurotransmitters are removed are:
Reuptake of neurotransmitter in presynaptic membrane
Neurotransmitter broken down by enzymes
Neurotransmitter diffuses away from synapse

Question 2

What is antagonist

Answer 2

Antagonists are molecules that bind to receptors but don’t stimulate them, blocking action potentials

Question 3

How does MDMA work

Answer 3

MDMA work by blocking pre synaptic receptors and stimulating release of serotonin, so more action potentials are produced

Question 4

How does low serotonin levels affect transmission of impulses

Answer 4

Low serotonin levels affects transmission of impulses in brain by:
Serotonin is neurotransmitter, there will be less
Less neurotransmitter results in fewer depolarisations of post synaptic membranes
So less chance of action potential

Question 5

How can MDMA lead to depression

Answer 5

MDMA can lead to depression by:
MDMA use results in depletion of serotonin
Post synaptic membrane becomes less responsive to serotonin
Lack of serotonin associated with depression