The blood pressure of a normal human being is found to be 120/80 mmHg.

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The blood pressure of a normal human being is found to be 120/80 mmHg. These ‘numbers’ represent the blood pressure at

ventricular contraction and ventricular relaxation, respectively
ventricular relaxation and ventricular contraction, respectively
auricular contraction and auricular relaxation, respectively
ventricular contraction and auricular contraction, respectively
This question was previously asked in
UPSC CDS-1 – 2023
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The blood pressure reading 120/80 mmHg represents the systolic pressure (120 mmHg) over the diastolic pressure (80 mmHg). Systolic pressure is the peak pressure in the arteries during ventricular contraction (systole), while diastolic pressure is the lowest pressure in the arteries during ventricular relaxation (diastole). Therefore, 120 mmHg represents the pressure during ventricular contraction and 80 mmHg represents the pressure during ventricular relaxation.
Systolic pressure corresponds to ventricular contraction; diastolic pressure corresponds to ventricular relaxation.
Blood pressure is typically measured in the brachial artery of the arm. The measurement reflects the pressure exerted by the blood on the walls of the arteries. Normal blood pressure is considered to be around 120/80 mmHg, though this can vary slightly among individuals. High blood pressure (hypertension) is a significant risk factor for cardiovascular diseases.

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