Chapter 18, Problem 57P

Interpretation Introduction

Interpretation:

The small molecule acting as a messenger molecule, which allows the dilation of blood vessel thereby relieving chest pain and alleviating the symptoms of erectile dysfunction, should be chosen from the given options:

1. Carbon dioxide,
2. Ammonia,
3. Nitric oxide,
4. Sulphur dioxide,

Concept Introduction:

• Vasodilation- It is the dilation of blood vessels which results in increased blood stream through the blood vessels that help in lowering the blood pressure.
• Substances which cause vasodilation are said to be vasodilators.

Correct answer:

c) Nitric oxide