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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

Coronary artery disease (CAD)

C

Heart failure

D

Atherosclerosis

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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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AAKASH INSTITUTE ENGLISH-TEST 2-EXERCISE
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  2. Protrusion of eye balls, increased basal metabolic rate and weight los...

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  4. Which layer of human eye consists of ganglion cells, bipolar cells and...

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  6. Select the Incorrect statement wrt biotechnological procedures

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  7. Select the two core techniques that enabled birth of modern biotechnol...

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  9. Mule is the cross between. Select the option which fills the blanks co...

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  11. Some features like gamopetalous flower, berry fruit and endospermous s...

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  17. Calculate the total number of microsporangia in a plant which is ha...

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  18. The common feature of axile and free-central placentation is

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  19. In which one of the following types of aestivation, anterior petals ar...

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  20. Match the following (Column I with Column II).

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