Answer: 120/80 mmHg.
- A 80/120 mmHg
- B 120/80 mmHg
- C 80/60 mmHg
- D 140/90 mmHg
Correct answer: B. 120/80 mmHg
Explanation: Normal blood pressure is 120/80 mmHg (systolic/diastolic). Above 140/90 is hypertension.
A single ECG cycle: the P wave marks atrial depolarisation (contraction signal), the large QRS complex marks ventricular depolarisation, and the T wave marks ventricular repolarisation (recovery) before the next cycle begins.
Concept context
Blood, lymph, the heart, the cardiac cycle, blood pressure, and ECG. High NEET weightage.