In a blood pressure reading of 120 over 80 mmHg, the figure 120 represents the
Correct answer: B. systolic pressure while the ventricles contract
- A. pulse rate per minute
- B. systolic pressure while the ventricles contract
- C. diastolic pressure while the heart relaxes
- D. average pressure of the cycle
Explanation
The higher number is recorded at ventricular contraction when arterial pressure peaks, and the lower number is the resting pressure during diastole. Both matter clinically, since sustained high values damage vessels.
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About Human Heart
The human heart is a four chambered muscular pump that maintains double circulation through the pulmonary and systemic circuits. Questions cover atria, ventricles, valves, major blood vessels, the cardiac cycle, pressure changes, the conduction system and ECG, while distinguishing arteries and veins from the chambers that receive or eject blood.
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