Valves are necessary in veins but not in arteries because
Blood flows with greater force in veins
Blood in veins flows without jerk
Blood from heart may not be pushed back into veins
Pressure in veins is low, which can flow the blood
Give the location of heart.
Purkinje fibres are present in
Draw a labelled diagram showing internal structure of heart.
‘Bundle of His’ is a part of which one of the following organs in humans?
Definition / Explanation :
$(1)$ Semi lunar valve