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The crocodile has a ................ cha...

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

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Which is not a four chambered heart?

Fishes have two chambered heart.

Do all reptiles have three chambered heart?

The death of the muscle fibres of the heart due to reduced blood supply to the hearts is called.................

Which one of the following sets of animals share a four chambered heart ?

Pacemaker of the heart .

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

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

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FULL MARKS-BODY FLUIDS AND CIRCULATION-ADDITIONAL QUESTIONS SOLVED ( Fill in the Blanks)
  1. he right atrium receives .............. blood.

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

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  3. The crocodile has a ................ chambered heart.

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

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

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

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

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

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

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

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

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

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

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  14. An increased heart beat is called................

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  15. The decreased heart beat is called....................

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

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

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

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  19. ................ is the number of beats of the heart per minute.

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  20. ........... is the volume of blood pumped out by one ventricle with ea...

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