HISTOLOGY
NERVOUS TISSUE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It is prepackaged into synaptic vesicles and stored for long periods of time.
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It is your body’s natural pain killer.
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It is not stored in vesicles, but is made on demand and acts immediately.
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A gas mask is required when in use.
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Detailed explanation-1: -Unlike other neurotransmitters, nitric oxide (NO) is not stored in synaptic vesicles. Rather, NO is released soon after it is produced and diffuses out of the neuron. NO then enters another cell where it activates enzymes for the production of “second messengers."
Detailed explanation-2: -Abstract. Nitric oxide (NO) works as a retrograde neurotransmitter in synapses, allows the brain blood flow and also has important roles in intracellular signaling in neurons from the regulation of the neuronal metabolic status to the dendritic spine growth.
Detailed explanation-3: -NO is considered an unconventional neurotransmitter because it is not released by exocytosis and its action does not occur through conventional receptor molecules.
Detailed explanation-4: -Soluble gas neurotransmitters are difficult to study, as they act rapidly and are immediately broken down, existing for only a few seconds. The most prevalent transmitter is glutamate, which is excitatory at well over 90% of the synapses in the human brain.