Basic plan of blood circulatory system

• What is the function of the pulmonary circuit?

  Takes oxygen poor blood to the respiratory surface, the lungs and returns oxygen enriched blood back to the heart
• What is the function of the systemic circuit?


  supplies oxygen enriched blood to all organs and tissues and returns oxygen poor blood from organs and tissues back to the heart
• Each circuit consists of?

  major arteries, arteries, arterioles, capillary beds, venules, veins , major veins
• What happens in the first ventricular contraction?


  the right ventricle pumps oxygen poor blood into the two lungs via pulmonary arteries. then in the lungs oxygen is loaded into the blood through diffusion and carbon dioxide is unloaded from blood into the external environment. This process occurs in the capillary beds in the left and righ lungs. Then the oxygen rich blood is transported into the left atrium via the two pairs of pulmonary veins.
• what is happening in the atrial contraction?

  oxygen rich blood is transported into the left ventricle
• What is happening in the next ventricular contraction?

  oxygen rich blood is transported into the aorta
• How Aorta transports blood throughout the body?

  Through arteries
• First aorta branches into what?

  Coronary arteries
• Coronary artery do what?

  Supplies blood into the heart muscles
• Then aorta branches into what?

  Arteries, arterioles leading to capillary beds in the head and arms and capillary beds in the abdominal organs and legs
• Where does the gas exchange occur?


  In the capillary beds where oxygen is diffused into the tissues while carbon dioxide is diffused into the blood capillaries
• What happens to the blood capillaries?

  Blood capillaries rejoined to form venules which direct oxygen poor blood into veins
• Inferior vena cava get blood from where?

  Oxygen poor blood from trunk and hind limbs drained into the inferior vena cava
• Superior vena cava get blood from?

  oxygen poor blood from head, neck and fore limbs are directed into the superior vena cava
• To where does the blood from inferior and superior vena cava is transported into?

  Right atrium
• Where does the blood go from right atrium?


  pass into right ventricle
• Next the blood is directed to where?


  pulmonary circuit