(a) Mention any two components of blood.
(b) Trace the movement of oxygenated blood in the body.
(c) Write the function of valves present in between atria and ventricles.
(d) Write one structural difference between the composition of artery and veins.
Components of Blood:
- Red blood cells
- White blood cells
Movement of oxygenated blood in the body
Lungs → Left side of the heart → aorta → body organs
Function of valves: Prevent back flow of blood
Difference between the composition of artery and veins
- Artery has thick elastic wall and vein is thin walled.
- Valves are present in the veins and not in arteries.