2023 · Q25
The blood pressure of a normal human being is found to be 120/80 mmHg. These 'numbers' represent the blood pressure at
General KnowledgeBiology
- Aventricular contraction and ventricular relaxation, respectively
- Bventricular relaxation and ventricular contraction, respectively
- Cauricular contraction and auricular relaxation, respectively
- Dventricular contraction and auricular contraction, respectively
Explanation
The first number (120 mmHg, systolic pressure) is the peak pressure in the arteries during ventricular contraction (systole), when blood is ejected from the heart. The second number (80 mmHg, diastolic pressure) is the minimum pressure during ventricular relaxation (diastole), when the heart fills. Hence the numbers represent ventricular contraction and ventricular relaxation respectively.