(a)[4]
Using the letters A-F in Fig. 1.1, Identify: a receptor cell; a region where dendron membrane depolarisation occurs; a structure that makes a synapse with an intermediate neurone; a structure that enables rapid transmission of impulses.
(b)[4]
Opioid drugs can bind to opioid receptors in the presynaptic membrane of a cholinergic synapse. Opioid drugs affect the normal events that occur at a cholinergic synapse. Suggest and explain the effect that an opioid drug will have on the normal events that occur at a cholinergic synapse.