Answer: blood.
- A blood
- B bone
- C cartilage
- D muscle
Correct answer: A. blood
Explanation: Blood is a fluid connective tissue carrying gases, nutrients and wastes.
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.