Answer: aorta.
- A aorta
- B vena cava
- C pulmonary vein
- D a capillary
Correct answer: A. aorta
Explanation: The aorta carries oxygenated blood from the heart to the body.
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.