For each of the following statements, decide whether the statement is true or fa

Question

For each of the following statements, decide whether the statement is true or false and explain the reason for your choice. Viagra promotes the development and maintenance of an erection by promoting the contraction of smooth muscle cells in the lining of penile blood vessels Viagra indirectly increases the levels of cGMP in smooth muscle cells Viagra is used to treat erectile dysfunction because it increases the activity of nitric oxide synthase. Viagra is used to treat erectile dysfunction because it acts as an inhibitor of phosphodiesterase 5 (PDE5)
For each of the following statements, decide whether the statement is true or false and explain the reason for your choice. Viagra promotes the development and maintenance of an erection by promoting the contraction of smooth muscle cells in the lining of penile blood vessels Viagra indirectly increases the levels of cGMP in smooth muscle cells Viagra is used to treat erectile dysfunction because it increases the activity of nitric oxide synthase. Viagra is used to treat erectile dysfunction because it acts as an inhibitor of phosphodiesterase 5 (PDE5)
For each of the following statements, decide whether the statement is true or false and explain the reason for your choice. Viagra promotes the development and maintenance of an erection by promoting the contraction of smooth muscle cells in the lining of penile blood vessels Viagra indirectly increases the levels of cGMP in smooth muscle cells Viagra is used to treat erectile dysfunction because it increases the activity of nitric oxide synthase. Viagra is used to treat erectile dysfunction because it acts as an inhibitor of phosphodiesterase 5 (PDE5)

Explanation / Answer

1. False- Viagra promotes smooth muscle relaxation which causes vasodilation and blood flow into the spongy tissue causing an erection.

2. True- Viagra protects cGMP from from degradation by Phosphodiesterase 5 enzyme and thus increases its concentration in Corpus cavernosum.

3. True- Nitric oxide binds to the guanylate cyclase receptor which causes formation of more cGMP and relaxes the smooth muscle cells causing erection

4. True - It acts as a compititive inhibitor of phosphodiesterase 5 enzyme which breaks down cGMP. Thus viagra maintains the concentration of cGMP in smooth muscle cells

Related Questions

Navigate

• Browse (All)
• Browse F
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.