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The condition when heart is not pumping ...

The condition when heart is not pumping blood effectively enough to meet the needs of the body is

A

Heart attack

B

Cardiac arrest

C

Angina pectoris

D

Heart Failure

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The human ciculatory system can be thought of as a closed system of interconnecting pipes through which fluid is continuously circulated by two pumps the two pumps the right and left verticles of the heart, work as simple two-stroke force pumps. The muscles of the heart regulate the force by contracting and relaxing. the contraction (systole) lasts about 0.2s and a complete systole/diastole (contraction/relaxation) cycle lasts about 0.8s. For flood pressures and speeds in the normal range. the volume flow rate of blood through a blood vessel is directly proportional tot he pressure difference over a length of the vessel and to the fourth power of the radius of the vessel. The total mechanical energy per unit volume of blood just as it leaves the heart is E//V=rhogh+P+rhov^(2) Q. Why is diastolic blood pressure muchh lower than systolic pressure? A. because the heart exerts more force on the blood during diastole B. Because the heart exerts no force on the blood during diastole C. Because the radii of the blood vessels increase during diastole while the force exerted by the heart on the blood remains the same. D. Because the radii of the blood vessels increase during diastole while the force exerted by the heart on the blood remains the same.

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ALLEN-HUMAN PHYSIOLOGY -I-EXERCISE -III(Analytical Questions )
  1. Read the following (A-D) Statements :- A. Plasma is a straw colouere...

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  2. Which of the following is incorrect match of W.B.Cs with its functions...

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  3. The condition when heart is not pumping blood effectively enough to me...

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  4. In humans, the right artrioventricular aperture of the heart is guarde...

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  5. Incomplete double circulation is found in :-

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  6. The first heart sound lubb' is associated with

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  7. Correctly match column -I with column -II {:(,"Column -I",,"Column-I...

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  8. Match the Colum-I with Column -II . {:(,"Column-I",,"Column-II"),((A),...

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  9. In which the following can increase the rate of heart beat ? (A) Sy...

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  10. during joint diastole

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  11. Which is responsible for initiating and maintining the rhythmic contra...

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  12. In which the following has the ability to generate action potential wi...

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  13. Which information is incorrect about cardiac output ?

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  14. Birds and Mammals have :-

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  15. Open circulatory system is present in :-

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  16. Identify the correct sequence of events in a cardiac cycle

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  17. During ventricular systole

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  18. The cardiac impules is intiated and conduct further upto venticle.The ...

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  19. The second heart sound (dubb) is associated with the closure of

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  20. Match the terms given under column 'A' with their functions given unde...

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