Gasotransmitters, Like NO, Are Synthesized in a Neuron and Can

question 118

Essay

 Gasotransmitters, like NO, are synthesized in a neuron and can work in a retrograde fashion (acting on the presynaptic cell). How can NO travel to a presynaptic neuron when there are no specialized vesicles for it, and what keeps NO from traveling further from the releasing neuron?

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Definitions:

Viscera

The internal organs in the main cavities of the body, especially those within the abdominal and thoracic cavities.

Vagus Nerve

A cranial nerve that innervates major organs, including the heart, lungs, and digestive tract, playing a critical role in the parasympathetic nervous system.

Facial Nerve

The seventh cranial nerve, responsible for controlling most of the muscles of facial expression and conveying taste sensations from the anterior two-thirds of the tongue.

Oculomotor Nerve

The third cranial nerve, controlling most eye movements, the response of pupils to light, and the eyelids.