Give difference : Atrium and Ventricles
Auricles/Atria | ventricles |
$(1)$ It is located in the upper broad part of the heart. | $(1)$They are located towards the lower end of the heart. |
$(2)$ It has thin wall. | $(2)$ It has thick wall. |
$(3)$ Atria are smaller in size than ventricles. | $(3)$ Ventricles are bigger in size than auricles. |
$(4)$ Deoxygenated blood is circulated in atria. | $(4)$ Oxygenated blood is circulated in ventricles |
Give the location of tricuspid valve
‘Bundle of His’ is a part of which one of the following organs in humans?
Valves are necessary in veins but not in arteries because
The pericardium and the pericardial fluid help in
The heart of a healthy man beats normally per minute