Question

(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 1

Answer

⟹  Components of Blood:

Plasma

Red blood cells

White blood cells

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

⤇ Artery has thick elastic wall and vein is thin walled.

⤇ Valves are present in the veins and not in arteries.

Answer 2

Answer:

a) Components of Blood:

1. Plasma

2. Red blood cells

3. White blood cells

4. Platelets

b) Movement of oxygenated blood in the body

Lungs → Left side of the heart → aorta → body organs

c) Function of valves: Prevent back flow of blood

d) 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.

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