Answer: Hypertension, a rise above the normal range.
- A Tachycardia, a faster than normal heart rate
- B Hypotension, a drop below the normal range
- C Bradycardia, a slower than normal heart rate
- D Hypertension, a rise above the normal range
Correct answer: D. Hypertension, a rise above the normal range
Explanation: Hypertension (high blood pressure) is diagnosed when blood pressure is persistently above the normal range of about 120/80 mm Hg, raising risk of heart disease.
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.