Who is known as the father of Angiology?

When the right ventricle contracts,the blood goes into:

All vertebrates possess a ...$A$.... Fishes have a ...$B$... chambered heart with atrium and ventricles. Amphibians and reptiles have a ...$C$... chambered heart. Birds and mammals have ...$D$... chambered heart.
Choose the correct option.

Which of the following animals has a myogenic heart?

When the balloon of an intra-aortic balloon pump $(IABP)$ inflates,more blood is carried to:

The cardiac pacemaker in a patient fails to function normally. The doctors find that an artificial pacemaker is to be grafted in him. It is likely that it will be grafted at the site of