A person might faint if his heart does not send enough blood to his

What is the special feature present in a human heart which does not allow mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the heart?

A person is injured in an accident and there is blood spurting out from his wrist. The most correct inference is that

A person who is eating rice .His food contains

A person who is eating rice. His food contains

A person passes much urine and drinks much water but his blood glucose level is normal. This condition may be the result of

If a person sitting on a rotating stool with his hands outstretched, suddenly lowers his hands, then his