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........... circulatory system is seen i...

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

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FULL MARKS-BODY FLUIDS AND CIRCULATION-ADDITIONAL QUESTIONS SOLVED ( Fill in the Blanks)
  1. The unidirectional flow of blood in veins is due to the presence of .....

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

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

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

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

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  6. The crocodile has a ................ chambered heart.

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

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

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

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

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

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

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

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

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

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

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  17. An increased heart beat is called................

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  18. The decreased heart beat is called....................

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

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

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