Heart and Circulation

Heart and Circulation

1. Important blood vessels in the heart

   • Vena cava
     • carries deoxygenated blood
     • from the body tissues to the heart
   • Pulmonary artery
     • carries deoxygenated blood
     • from the heart to the lungs
   • Aorta
     • carries oxygenated blood
     • from the heart to the body tissues
   • Pulmonary vein
     • carries oxygenated blood
     • from lungs to the heart

2. Circulation Path

   • 1).Deoxygenated blood enters the vena cava
     • 2).This blood enters the right atrium, which then proceeds to enter the right ventricle
       • 3).This then exits the heart through the pulmonary artery, to travel to the lungs
         • 4).The blood re-enters the heart through the pulmonary vein
           • 5).Then, the blood enters the left atrium, which then fills up the left ventricle
             • 6).After that, the blood exits through the aorta, to give blood to the rest of the body

3. Types of blood vessels

   • Capillaries
     • smallest vessel you have
     • high pressure blood flow
     • carries blood away from the heart
   • Veins
     • small, thin walls and less muscle
     • large amount of blood
     • low pressure blood flow
     • valves to prevent backflow
   • Arteries
     • thick walls and muscle
     • carries blood away from the heart
     • high pressure blood flow