The covering of heart is ……

Left atrioventricular aperture is guarded by ……

The pulmonary trunk and systemic aorta are joined by ………

Atrioventricular node is located in ……

… is most commonly used to feel pulse.

QRS is related to ……

Blood is a fluid connective tissue derived from ……

What is the increase in number of RBCs called?

What is the increase in the number of WBCs called?

In which of the following diseases there is uncontrolled increase in number of WBCs ?