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Why do our legs swell?...

Why do our legs swell?

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After overnight journey, in sitting position without moving, we feel that our feet swollen. This is called edema.
Because the blood circulation becomes slow in the lower portion and causes swelling.
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VGS PUBLICATION-BRILLIANT-TRANSPORTATION - THE CIRCULATORY SYSTEM-QUESTIONS GIVEN IN THE LESSON
  1. Are all the chambers connected to each other?

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  2. What are the other differences could you observe between the chambers?

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  3. How are they connected to each other? How are they separated?

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  4. Do you find any specific observation in between two chambers?

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  5. How many times did your pointer touch the heart in fig. - 11(a) and (b...

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  6. What is the mechanism behind this?

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  7. Are root directly in contact with water?

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  8. How is water absorbed ?

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  9. Is there any increase in the water level?

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  10. What is the role of xylem?

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  11. What is the number of blood vessles attached to the heart?

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  12. Are all the blood vessels right ? How many of them are rigid?

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  13. Do you think that the stiffness/rigidity of blood vessel is something ...

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  14. Why do our legs swell?

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  15. Is there anything like that in plants which corresponds to circulatory...

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  16. Answer the following after reading the experiment conducted by Willia...

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  17. Why do subcutaneous blood vessels bulge on the side away form the hear...

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  18. The deep seated blood vessels bulge on the side towards the heart when...

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  19. There are valves in the heart between atria and ventricles. Is the pur...

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  20. After reading the experiments by Harvey fill in the following table. U...

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