Function of WBCs is to

1. Transport oxygen
2. Help in clotting of blood
3. Provide immunity
4. Provide storage of food

Blood Capillary is a

1. Broad tube
2. Artery with thick wall
3. Vein with large lumen
4. Narrow tube made up of endothelium only

The only artery which carries deoxygenated blood is

1. Hepatic artery
2. Pulmonary artery
3. Aorta
4. Renal artery

Sphygmomanometer measures

1. Pulse rate
2. Heart beat
3. Blood pressure
4. Brain activity