How Is Nitric Oxide Synthesized

question 10

Multiple Choice

How is nitric oxide synthesized?

• A) Nitric oxide is synthesized from heme oxygenase (HO) after activation by the calcium-calmodulin complex.
• B) Nitric oxide is synthesized from heme oxygenase (HO) after activation by guanylate cyclase.
• C) Nitric oxide is synthesized from guanylate cyclase after activation by the calcium-calmodulin complex.
• D) Nitric oxide is synthesized from nitric oxide synthase (NOS) after activation by the calcium-calmodulin complex.
• E) Nitric oxide is synthesized from nitric oxide synthase (NOS) after activation by guanylate cyclase.

---

Definitions:

Scalene

Refers to a group of three paired muscles in the lateral neck that facilitate breathing and are involved in various neck movements.

Closes the Anal Opening

This term likely refers to the sphincter ani externus muscle, which controls the opening and closing of the anus.

External Anal Sphincter

A muscle that controls the expulsion of feces from the anal canal.

External Urethral Sphincter

A muscle that controls the outflow of urine from the bladder and allows voluntary control over urination.