Control of heart rate

Last updated: 25/03/2022
AQA A-Level Biology Stimuli, both internal and external are detected and lead to a response Control of heart rate
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  1. A normal resting heart rate for adults ranges from ——- beats per minute.

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  2. The system that controls cardiac muscles is the ———

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  3. Which area of the brainstem controls heart rate?

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  4. An important part of the electrical conduction system of the heart is ———

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  5. Which of the following is the primary pacemaker of the heart?

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  6. The SA node is located in the _____

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  7. The bundle of His is made up of _________

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  8. Which part of the medulla oblongata controls the heart rate?

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  9. How many chambers of the heart are there?

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  10. Which receptors increase heart rate and contractility?

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  11. The medulla oblongata controls ——-

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  12. How many nerves are connected with the medulla oblongata which regulates heart rate by either speeding it up or slowing it down?

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  13. Which receptors can regulate heart rate?

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  14. From where in the electrical system of the heart does the Bundle of His transmit impulses from?

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  15. Bundle of His is also known as the ———

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  16. The SA node is ——- in size as compared to the AV node

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  17. Which of the following is primarily regulated by cardiac impulses?

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  18. Which of the following is primarily regulated directly by the cardiac center in the brainstem?

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  19. Which of these shows maximum rhythmicity?

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  20. The firing rate of the atrioventricular node is ————-

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  21. The firing rate of the SA node is ————-

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  22. The electrical relay station between the upper and lower chambers of the heart is called —————–

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  23. Which of these is the major element in the cardiac conduction system, the system that controls the heart rate?

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