25 out of 95
Which of the following is not a function of nitric oxide:
|A||Kill cancer cells|
|C||Relaxation of vascular smooth muscles|
|D||Deficiency may cause clinical hypertension|
Ans. B Vasoconstriction
- The production of NITRIC OXIDE by nitric acid synthetase in macrophages, lymphocytes, and neutrophils is a vital determinant of immune and inflammatory responses.
- The bactericidal, fungicidal, viricidal, parasiticidal, and TUMORICIDAL Q activities of macrophages are due to vigorous elaboration of nitric oxide by nitric acid synthetase.
- Nitric oxide RELAXES GASTROINTESTINAL SMOOTH MUSCLE Q and leads to reduced motility, relaxation of the sphincter of Oddi , and relaxation of the lower esophageal sphincter.
- Nitric oxide is a decisive determinant of basal vascular tone, and a deficiency of nitric oxide is associated with HYPERTENSION Q .