Circulatory System

• Vena Cava - bring deoxygenated blood to the heart
• Right Atrium - recieves deoxygenated blood from body via vena cava
• Tricuspid valve - prevents backflow in Right atrium
• Right Ventricle -contracts sending blood out of heart
• Semilunar valve AKA Pulmonary valve - prevents backflow into heart
• Pulmonary artery - sends deoxygenated blood to lungs and is the only deoxygenated artery in the body
• Pulmonary vein - oxygenated blood brought to heart, only oxygenated vein in body
• Left atrium - receives oxygenated blood from lungs via the pulmonary valve
• Bicuspid Valve/Mitral Valve - an atrioventricular valve on the left side of the heart preventing backflow into the left atrium
• Left ventricle - largest chamber of the heart, pumps blood to entire body, very muscular
• Semilunar valve/ Aortic valve - prevents backflow of blood into the right ventricle
• Aorta - main artery, sends oxygenated blood to entire body
• • THe left side of the heart is oxygenated
  • The septum separates the heart oxygenated and deoxygenated side
  • The aorta is the main artery
  • The vena cava is the main vein
• Artery - thick and elastic walls, small lumen, high pressure, from heart, no valves
• Vein - thin walls, large lumen, low pressure, to heart, valves present
• Capillary -fine walls [one cell thick], fine lumen, high pressure, inbetween artery and veins, absent valves