Zusammenfassung der Ressource
Circulatory System
- blood enters atria from
vena cava and pulmonary
vein
- atria contract pushing
blood into the
ventricles
- The ventricles
contract, blood flows
through pulmonary
artery and aorta and
out of the heart
- blood flows to organs
through arteries and
returns through veins
- Deoxygenated blood
blood to lungs to pick up
oxygen then goes to heart
- Arteries
- Strong, thick, elastic walls to
withstand high pressure
- Thick layers of muscle to
stretch and spring back
- Thick walls compared
to the lumen (hole)