Test 145  (General physiology)
1. The release of neurotransmitter from synaptic vesicles:
a. takes place by exocytosis

b. is controlled by neuronal calcium influx

c. is quantal

d. requires neuronal sodium ions influx

e. requires neuronal potassium ions efflux

2. The following are true about acetylcholine:

a. it has a strong affinity for nicotinic receptors

b. is derived from acetyl CoA and choline

c. is synthesized by a reaction involving choline 

d. is inactivated by reuptake

e. is inactivated by hydrolysis to acetyl CoA and choline

3. The effect of calcium ions on neurotransmitter release at synapses 

a. vesicular fusion

b. tonic depolarization of the presynaptic neurone

c. post-tetanic potentiation

d. transport of synaptic vesicles to the presynaptic active 
    zone of release

e. reuptake of noradrenaline

4. The neuronal resting membrane of the human brain is :

a. maintained by the sodium pump

b. around -70mV

c. maintained by using ATP for energy

d. achieved by active extrusion of potassium ions out of 
    the neurone

e. maintained by influx of calcium ions

5. In rapid eye movement sleep, the following are seen:
a. increased heart rate

b. increased systolic blood pressure

c. decreased respiratory rate

d. increased cerebral flow

e. maximal loss of muscle tone

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