Control of Heart Rate Flashcards

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1
Q

What is the role of the Vagus Nerve?

A
  • Decreases the heart rate
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2
Q

What is the role of the sympathetic (Accelerator) Nerve?

A
  • Increases the heart rate
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3
Q

Where does the cardiovascular centre of the brain found?

A
  • In the medulla oblongata
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4
Q

What is the role of the baro receptors?

A
  • Baroreceptor detect the change in pressure and are found in the carotid artery (a swelling carotid sinus) and in the walls of the heart
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5
Q

What is the role of the chemoreceptors?

A
  • chemoreceptors detect the changes in the blood PH and in carbon dioxide and oxygen concentration.
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6
Q

Where are the chemoreceptors found?

A
  • They are found in the carotid body near to the arotid artery, aorta, the walls of the heart rate and the medulla oblongata of the brain.
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7
Q

How are the sympathetic nerve and vagus nerve antagonistic to one another?

A

Sympathetic increases heart rate and vagus nerve decrease heart rate

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8
Q

What else other than nerves can influence heart rate?

A
  • hormones
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