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MAO and Neurotransmitter Regulation Quiz

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MAO and Neurotransmitter Regulation Quiz

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Questions and Answers

What is the role of nitric oxide released by neurons?

Breaks down neurotransmitters at the synapse

Inhibits blood flow to the brain

Acts as a neurotransmitter to stimulate the postsynaptic neuron (correct)

Causes contraction of blood vessels near the brain

Where are most neurotransmitters synthesized before release?

Dendrites

Presynaptic terminal (correct)

Neuromuscular junction

Postsynaptic terminal

Which of the following is NOT a monoamine neurotransmitter?

Dopamine

Serotonin

GABA (correct)

Norepinephrine

Which amino acid serves as a precursor to serotonin?

Tryptophan (C) Signup and view all the answers

What is the main function of transmitter-gated channels?

Control the electrical activity of the neuron membrane (C) Signup and view all the answers

Which neurotransmitter is categorized as a neuropeptide?

Substance P (A) Signup and view all the answers

What is the primary function of the MAO enzyme in neurons?

To break down neurotransmitters like serotonin, dopamine, and norepinephrine (D) Signup and view all the answers

Which of the following best describes the process of exocytosis?

The bursts of release of neurotransmitters from the presynaptic neuron (A) Signup and view all the answers

What are ionotropic effects in the context of neurotransmission?

The brief on/off effects of neurotransmitters on the postsynaptic neuron (C) Signup and view all the answers

Which type of channels are involved in transmitter-gated or ligand-gated channels?

Receptor-gated channels (C) Signup and view all the answers

Which neurotransmitter is primarily involved in excitatory ionotropic synapses in the brain?

Glutamate (D) Signup and view all the answers

Which of the following neurotransmitters is primarily involved in inhibitory ionotropic synapses in the spinal cord?

Glycine (C) Signup and view all the answers

What is the primary function of the enzyme monoamine oxidase (MAO)?

To inactivate monoamine neurotransmitters like dopamine and serotonin (C) Signup and view all the answers

Which of the following best describes the process of neurotransmitter release and diffusion?

Neurotransmitters are released from the presynaptic neuron and diffuse across the synaptic cleft to bind to receptors on the postsynaptic neuron. (A) Signup and view all the answers

Which of the following neurotransmitters is primarily responsible for ionotropic effects?

Glutamate (D) Signup and view all the answers

What type of receptors do transmitter-gated channels belong to?

Ionotropic receptors (B) Signup and view all the answers

Which of the following neurotransmitters is primarily inhibitory in the central nervous system?

GABA (B) Signup and view all the answers

What is the primary function of glycine in the central nervous system?

To act as an inhibitory neurotransmitter (A) Signup and view all the answers