Blood Flow: Path of Blood Through the Heart Answers
Pathway of blood through the heart
1. Blood enters the right atrium from the superior and inferior venae cavae, and the coronary sinus. 2. From right atrium, it goes through the tricuspid valve to the right ventricle. 3. From the right ventricle, it goes through the pulmonary semilunar valves to the pulmonary trunk 4. From the pulmonary trunk it moves into the right and left pulmonary arteries to the lungs. 5. From the lungs, oxygenated blood is returned to the heart through the pulmonary veins. 6. From the pulmonary veins, blood flows into the left atrium. 7. From the left atrium, blood flows through the mitral valve into the left ventricle. 8. From the left ventricle, it goes through the aortic semilunar valves into the ascending aorta. 9. Blood is distributed to the rest of the body (systemic circulation) from the aorta.
Blood can be pumped...
1. through the carotid artery and into the brain 2. through the auxiliary arteries and into the arms 3. through the aorta and into the torso and legs
Arteries
Hint to help you remember: Arteries = Away - blood is moving away from the heart
Veins
Hint to help you remember: veins = toward - blood is moving toward the heart
lungs
location where body gets rid of carbon dioxide and picks up oxygen
Capillaries
small blood vessels that connect the arteries and veins
pulmonary artery (blue)
the artery that goes from right ventricle to lungs
aortic arch (red)
the large arch leading away from heart carrying oxygen rich blood
Why must the heart contract very strongly to pump blood from the left ventricle into the aorta?
the left ventricle must pump blood to all parts of body—it must pump harder since blood has to go further
right ventricle (blue)
the pumping chamber that sends blood with carbon dioxide toward the lungs
left ventricle (red)
the pumping chamber that sends blood with oxygen toward all parts of the body
right atrium (blue)
the receiving chamber on the right side of heart that has carbon dioxide
left atrium (red)
the receiving station for oxygen rich blood
mitral valve (red)
the valve between left atrium and left ventricle
tricuspid valve (blue)
the valve between the right atrium and right ventricle
pulmonary vein (red)
the vein that carries blood with oxygen into left atrium
vena cavity (blue)
the vein that enters right side of heart carrying carbon dioxide
