Answer: Transport oxygen to body tissues.
- A Transport oxygen to body tissues
- B Initiate blood clotting at wound sites
- C Engulf bacteria by phagocytosis
- D Produce antibodies against pathogens
Correct answer: A. Transport oxygen to body tissues
Explanation: Red blood cells contain haemoglobin, which binds oxygen in the lungs and transports it to tissues throughout 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.