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Decrease in the rate of heart beat, spee...

Decrease in the rate of heart beat, speed of conduction of action potential and thereby the cardiac output is under the control of

A

Neural signals through the sympathetic nerves

B

Neural signals through the parasymphathetic nerves

C

Adrenaline

D

ANS

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The correct Answer is:
B
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P.Normal activities of the heart are regulated extrinsically i. e auto regulated by specialized muscles. Q. A special neural center in the medulla oblongata can moderate the cardiac function through the autonomic nervous function ( ANS) . R. Parasympathetic mental signals decrease the rate of heartbeat. S. Adrenal medullary hormones increase cardiac output. How many of the given statements are incorrect about the regulation of cardiac activities ?

AAKASH INSTITUTE ENGLISH-BODY FLUIDS AND CIRCULATION-Exercise
  1. Origin of heart beat and its conduction is represented by

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

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

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  4. Human heart is

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

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

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

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

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  9. In ECG, ST segment is elevated in

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

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

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

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

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

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  15. What would happen if there is failure of receiving the atrial impulse ...

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  16. High blood pressure can potentially harm the vital organs like A - H...

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  17. If fat / cholestrol is deposited in the artery supplying the heart mus...

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  18. Which of the following statements is not true about blood pressure ?

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  19. Difference between systolic and diastolic blood pressure is

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  20. Angina pectoris is a major symptom of

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