Our heart normally beats ....... times in a minute.

What is the function of papillary muscles?

Which one of the following is a matching pair?

In humans,blood flows from the posterior vena cava into the diastolic right atrium due to:

All the components of the conducting system can generate an action potential for the contraction of heart muscle,but the Sinoatrial node acts as the pacemaker because

The inter-auricular septum in embryonic stages has a/an: