the heart

• jobs of the heart:

  • blood flow (systemic flow)
  • pulmonary flow (flow of blood to heart and lungs and back)
• coronary blood vessels supply the heart with oxygen and nutrients and fall under the systemic flow
• vein > blood going towards the heart

  arteries > blood going away to body
• blood coming from a giant vein called the superior vena cava and inferior vena cava ends up in the right atrium. the blood then flows to the right ventricle through the tricuspid valve.
• blood going from the right ventricle passes through the pulmonary valve
• pulmonary means lungs
• after blood passes through the pulmonary valve, it splits, some blood going through to the left pulmonary valve and some to the right pulmonary valve. the blood then goes to the lungs.
• deoxygenated blood is dark red in colour
• vessels that carry the blood from the lungs back to the heart are called the pulmonary veins
• blood goes from the left atrium to the left ventricle through the mitral valve
• the final valve in the heart that the blood passes through is the aortic valve
• blood flow through the heart

  
• after the blood goes through the aorta, the blood goes out to the rest of the body.
• the thorax is the region of the body between the neck and the abdomen. this includes the heart, lungs and diaphragm.