Mention components of blood. Trace the movement of oxygenated blood

(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.

Answer

Components of Blood:

  1. Plasma
  2. Red blood cells
  3. White blood cells
  4. Platelets

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

  1. Artery has thick elastic wall and vein is thin walled.
  2. Valves are present in the veins and not in arteries.