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Heart pumps blood more forcefully in old...

Heart pumps blood more forcefully in older persons than younger ones due to

A

decrease in oxygen content of blood

B

decrease in elasticity of arteries

C

fall in nutrient content of blood

D

increase in elasticity of arteries

Text Solution

Verified by Experts

The correct Answer is:
B

As one ages, arteries lose their elasticity. Consequently the heart has to pump the blood more forcefully in order to fulfill the need of the body cells.
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NCERT FINGERTIPS-BODY FLUIDS AND CIRCULATION-Body Fluids And Circulation
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  2. Which of the following chambers of the heart has the thickest muscular...

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  3. Heart pumps blood more forcefully in older persons than younger ones d...

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  4. Pacemaker is situated in the

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  5. Read the following statements and select the correct option Stateme...

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  6. In which one of the following pairs, two terms represent the same thin...

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  7. Read the following statements and select the correct ones (i) Nodal ...

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  8. The given figure illustrates a section through the human heart. W...

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  9. Chordae tendineae are found in

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  10. The problem of electrical discontinuity caused in the normal heart by ...

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  11. Match column I with column II and select the correct option from the c...

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  12. Blood enters the heart because muscles of the

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  13. During ventricular systole

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  14. If due to some injury the chordae tendineae of the tricuspid valve of ...

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  15. In humans, blood passes from the post caval to the diastomic right atr...

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  16. The figure given below three stages in the cardiac cycle Which of...

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  17. A red blood cell, entering the right side of the heart passes by or th...

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  18. What happens when the pacemaker becomes nonfunctional ?

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  19. In the given figure the durations of the events of the cardiac cycle a...

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  20. Which of the following statements (s) regarding the cardiac system is/...

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