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he right atrium receives .............. ...

he right atrium receives .............. blood.

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The left atrium receives ................ blood.

On the left side of the right atrium there is a node called...............

Assertion : Left atrium has the thickest muscles Reason : Right atrium receive blood from the lungs

Blood vessels that supply blood to the cardiac muscles are ................

The unidirectional flow of blood in veins is due to the presence of ..............that prevents back flow of blood.

The ratio of red blood cells to blood plasma is expressed is ..............

Disease of heart and blood vessels: Cardiovascular disease: Deposition of cholesterol in the blood vessel: .................

The blood vessels that carry blood away from the heart are called.............

FULL MARKS-BODY FLUIDS AND CIRCULATION-ADDITIONAL QUESTIONS SOLVED ( Fill in the Blanks)
  1. Blood vessels that supply blood to the cardiac muscles are ..............

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  2. ........... circulatory system is seen in Arthropoda and most molluses...

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  3. he right atrium receives .............. blood.

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  4. The left atrium receives ................ blood.

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  5. The crocodile has a ................ chambered heart.

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  6. ..........guards the opening between the left atrium and left ventricl...

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  7. The myocardium of the ventricle is thrown into irregular muscular ridg...

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  8. The heart wall is made up of outer epicardium, middle myocardium and t...

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  9. The heart is covered by a double membrane called........

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  10. On the left side of the right atrium there is a node called..............

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  11. The rhythmic contraction and expansion of heart is called.............

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  12. The contraction of the chambers of the heart is called.............

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  13. The relaxation of the chambers of the heart is called.............

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  14. The 'lub'sound is associated with the closure of the............... Va...

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  15. The 'dub' sound is associated with the closure of..................val...

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  16. An increased heart beat is called................

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  17. The decreased heart beat is called....................

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  18. The phase I of the cardiac cycle is called..........

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  19. The ventricular systole is the phase of the cardiac cycle.

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  20. The amount of blood pumped out by each ventricle per minute is called....

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