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Which of the following is known as natur...

Which of the following is known as natural pacemaker of the heart ?

A

Sinu atrial node

B

Atrio ventricular node

C

Bundle of His

D

Purkinje fibres

Text Solution

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The correct Answer is:
A
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AAKASH INSTITUTE ENGLISH-BODY FLUIDS AND CIRCULATION-Exercise
  1. Purkinje fibres arise from

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  2. In humans, the right artrioventricular aperture of the heart is guarde...

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  3. Which of the following is known as natural pacemaker of the heart ?

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  4. All veins carry deoxygenated blood except

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  5. Pulmonary artery differs from pulmonary vein in having

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  6. Papillary muscles occur in

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  7. Origin of heart beat and its conduction is represented by

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  8. During emergency situations the increase in heart rate, cardiac output...

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  9. Decrease in the rate of heart beat, speed of conduction of action pote...

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  10. Human heart is

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  11. If we give an injection of acetylcholine to a person, rate of heart b...

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  12. The given figure is the ECG of a normal human. Which one of its compon...

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  13. Which of the following wave in ECG represents depolarisation of the at...

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  14. Which of the following wave in ECG marks the end of ventricular systol...

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  15. In ECG, ST segment is elevated in

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  16. The main difference in the structure of arteries and veins is in

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  17. Which of the following system returns the blood from intestine and bre...

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  18. Artificial pacemaker is required when a person is sufering from

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  19. When the heart is not pumping the blood effectively enough to meet the...

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  20. A symptom of acute chest pain when enough oxygen is not reaching the h...

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