What is the Difference between Villi and Alveoli ? (4 Points)
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Answered by
68
villli are finger like projections present in the ineer wall of intestine . it helps in the absorption of food as it has larger surface area which decreases the rate of absorption of digested food .
alveoli are tiny sac like structures present in the lungs which allow oxygen and carbon dioxide to move between the lungs .
alveoli are tiny sac like structures present in the lungs which allow oxygen and carbon dioxide to move between the lungs .
1722:
inner walls *
it increases surface area which increases the rate of absorption
we can also say that they have large surface area so there will be efficient absorption of digested food
Answered by
61
1)villi are finger like projections present on the inner lining of the small intestine.
2)help in absorption
3)they have a network of fine blood cells which are involved in absorption of nutrients
4)they increase the surface area of the lining and make absorption efficient.
1)alveoli are tiny air bags at the end of bronchioles
2)here exchange of gases thakes place
2)several blood cells are present which are involved in exchange of gases
4)oxygen rich air reaches the alveoli and is absorbed by the haemoglobin to form oxihaemoglobin which is transported to every cell where respiration is taking place
2)help in absorption
3)they have a network of fine blood cells which are involved in absorption of nutrients
4)they increase the surface area of the lining and make absorption efficient.
1)alveoli are tiny air bags at the end of bronchioles
2)here exchange of gases thakes place
2)several blood cells are present which are involved in exchange of gases
4)oxygen rich air reaches the alveoli and is absorbed by the haemoglobin to form oxihaemoglobin which is transported to every cell where respiration is taking place
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