---------------- Through blood vessels. These include: -Arteries: Thick and elastic, transport blood away from the heart. -Veins: Thin, slightly elastic, transport blood back to the heart, contain valves to prevent back flow of blood. -Capillaries- extremely thin, where exchange of materials occurs.
Atrial contraction:
Right Side:
blood flows from your right atrium into your right ventricle through the open tricuspid valve. When the ventricles are full, the tricuspid valve shuts. This prevents blood from flowing backward into the atria while the ventricles contract (squeeze).
Left Side:
blood flows from your left atrium into your left ventricle through the open mitral valve. When the ventricles are full, the mitral valve shuts. This prevents blood from flowing backward into the atria while the ventricles contract (squeeze).
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment