In the physiological system, nitric oxide is known to act through_______________?
Correct answer: A. Cyclic GMP
- A. Cyclic GMP
- B. Calcium ions
- C. Cyclic AMP
- D. Prostacyclins
Explanation
Nitric oxide activates soluble guanylyl cyclase, increasing cyclic GMP, which mediates effects such as vascular smooth-muscle relaxation. Cyclic AMP is used by several other hormone-signalling pathways.
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