Question

Signelling system and types of signalling molecules

Answer 1

The simple gas nitric oxide (NO) is a major paracrine signaling molecule in the nervous, immune, and circulatory systems. Like the steroid hormones, NO is able to diffuse directly across the plasma membrane of its target cells. ... These neurotransmitters act on endothelial cells to stimulate NO synthesis.

Answer 2

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The simple gas nitric oxide (NO) is a major paracrine signaling molecule in the nervous, immune, and circulatorysystems. Like the steroid hormones, NO is able to diffuse directly across the plasma membrane of its target cells. ... These neurotransmitters act on endothelial cells to stimulate NO synthesis.