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The problem of electrical discontinuity ...

The problem of electrical discontinuity caused in the normal heart by the connective tissue separating the atria from the ventricles is solved by

A

coordinating electrical activity in the atria with electrical activity in the ventricles by connecting them via the bundle of His

B

having the A-V node function as a secondary pacemaker

C

having an ectopic pacemaker

D

coordinating electrical activity in the atria with electrical activity in the venticles by connecting them via the vagus nerve

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The correct Answer is:
A
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NCERT FINGERTIPS-BODY FLUIDS AND CIRCULATION-Body Fluids And Circulation
  1. The given figure illustrates a section through the human heart. W...

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  2. Chordae tendineae are found in

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  3. The problem of electrical discontinuity caused in the normal heart by ...

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  4. Match column I with column II and select the correct option from the c...

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  5. Blood enters the heart because muscles of the

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  6. During ventricular systole

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  7. If due to some injury the chordae tendineae of the tricuspid valve of ...

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  8. In humans, blood passes from the post caval to the diastomic right atr...

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  9. The figure given below three stages in the cardiac cycle Which of...

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  10. A red blood cell, entering the right side of the heart passes by or th...

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  11. What happens when the pacemaker becomes nonfunctional ?

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  12. In the given figure the durations of the events of the cardiac cycle a...

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  13. Which of the following statements (s) regarding the cardiac system is/...

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  14. In a cardiac output of 5250 mL per minute, with 75 heartbeats per minu...

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  15. Rate of heartbeat is determined by

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  16. Which one of the following is a matching pair ?

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  17. Heart sound which is longer is

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  18. X" is the rhythmic contraction and relaxation in the aorta and its mai...

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  19. Which of the following is the diagrammatic representation of standard ...

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  20. In a standard ECG which one of the following alphabets is the correct ...

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