Blood flows into the atria, which then contracts, forcing blood into the ventricles. The ventricles then contract too, forcing blood out around the body
1 of 5
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
2 of 5
Where does blood leave the heart from?
The aorta and the pulmonary artery
3 of 5
What do the SA and AV nodes release?
A small electrical current
4 of 5
What factors affect heart rate?
Amount of exercise (amount of oxygen required by muscles); hormone (e.g. Adrenalin) levels
5 of 5
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
Comments
No comments have yet been made