synaptic transmission exam qs

Question 1

Blinking involves cholinergic synapses. Anaesthetic S is a similar shape to acetylcholine.
Suggest how anaesthetic S stops the transmission across the synapse

Answer 1

Complementary to receptor for acetylcholine;
2. Binds to receptor;
3. On postsynaptic (membrane)

Question 2

Should time taken to stop blinking be used as an indicator of when to start surgery?
Explain your answer

Answer 2

Takes longer to become unconscious than it does to stop
blinking;
2. No overlap of standard error

Question 3

The scientists concluded that MDMA affects movement by binding to serotonin receptors.
How do these results support this conclusion?

Answer 3

1- Movement in all groups (about) same before MDMA;
2 - MDMA increases movement in Group L
3 - little increase for Group M