Cardiac Cycle and Heart rate

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  • Created by: Cam
  • Created on: 08-06-13 18:42
What happens in the Cardiac cycle?
Blood flows into the atria, which then contracts, forcing blood into the ventricles. The ventricles then contract too, forcing blood out around the body
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What order do impulses go in, and what do they make happen?
SA node makes atria contract, which stimulates AV node, which makes ventricles contract
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Where does blood leave the heart from?
The aorta and the pulmonary artery
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What do the SA and AV nodes release?
A small electrical current
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What factors affect heart rate?
Amount of exercise (amount of oxygen required by muscles); hormone (e.g. Adrenalin) levels
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Other cards in this set

Card 2

Front

What order do impulses go in, and what do they make happen?

Back

SA node makes atria contract, which stimulates AV node, which makes ventricles contract

Card 3

Front

Where does blood leave the heart from?

Back

Preview of the front of card 3

Card 4

Front

What do the SA and AV nodes release?

Back

Preview of the front of card 4

Card 5

Front

What factors affect heart rate?

Back

Preview of the front of card 5

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