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Neurotransmitter Synthesis and Synaptic Communication

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Questions and Answers

What is the role of distinct key enzymes in neurotransmitter synthesis?

To synthesise each type of neurotransmitter (correct)
To release neurotransmitters into the synaptic cleft
To degrade neurotransmitters
To inhibit neurotransmitter receptors

What is the effect of Na+ channel blockers on neural activity?

Increase neural activity
Increase neurotransmitter synthesis
Have no effect on neural activity
Decrease neural activity (correct)

What is the role of Ca2+ entry in neurotransmission?

To trigger neurotransmitter release from the presynapse (correct)
To inhibit neurotransmitter receptors
To inhibit neurotransmitter release
To synthesise neurotransmitters

What is the effect of receptor agonists on neurotransmission?

Mimic or enhance neurotransmission (A) Signup and view all the answers

What is the function of SNARE complex in neurotransmission?

To inhibit neurotransmitter release (A) Signup and view all the answers

What is the effect of Ca2+ channel blockers on neurotransmission?

Decrease neurotransmitter release (B) Signup and view all the answers

What is the primary mechanism by which neurotransmitters are removed from the synaptic cleft?

Reuptake by presynaptic neurons (A) Signup and view all the answers

Which neurotransmitter is involved in the regulation of pituitary secretions?

Dopamine (A) Signup and view all the answers

What is the enzyme responsible for the biosynthesis of γ-aminobutyric acid (GABA)?

Glutamic acid decarboxylase (C) Signup and view all the answers

Which receptor is involved in the modulation of serotonin activity?

5-HT receptor (D) Signup and view all the answers

What is the major neurotransmitter of the CNS that is involved in fast excitatory transmission?

Glutamate (C) Signup and view all the answers

What is the mechanism by which certain drugs increase neurotransmitter activity?

Inhibiting degradation enzymes (B) Signup and view all the answers

What is the first step in the process of neurotransmission?

Neurotransmitter synthesis and storage (B) Signup and view all the answers

What is the purpose of neurotransmitter reuptake?

To terminate the signal (B) Signup and view all the answers

What is the role of receptors in neurotransmission?

To bind to neurotransmitters and transmit the signal (B) Signup and view all the answers

What is the final step in the process of neurotransmission?

Neurotransmitter degradation/reuptake (A) Signup and view all the answers