Question

i) mention any two components of blood.

ii) Trace the movement of oxygenated blood in the body.

iii) Write the function of valves present in between atria and ventricles.

iv) Write one structural difference between the composition of artery and veins.​

Answer 1

Answer:

1:water and cells

2: movement of oxygenated blood from lungs to hearts

Answer 2

I) plasma and white blood cells
II) oxygenated blood moves from lungs to left atrium to left ventricle to all cells through aorta
III) valves in atria and ventricles prevent backward flow of blood and prevent mixing of oxygenated blood with deoxygenated blood
IV) Artery is thick and elastic where as vein is thin has valves