7. Be able to describe systemic and pulmonary circulation (Notice use of the terms: artery and vein in different ways. What you can count on is arteries always carry blood away from the heart but you may be surprised to find an artery that carries deoxygenated blood.) a. Consider how deoxygenated blood enters the heart. What structures must it pass through to get into the heart chamber? b. How does blood get oxygenated? Think about how oxygenated blood re-enters the heart? What structures must it pass through to get into the heart chamber? What is the first heart chamber to receive oxygenated blood? How does oxygenated blood reach the tissues of the body?
Added by Gema P.
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Blood enters the right side of the heart through vessels known as the 1. and 2. and travels into the 3. . As this upper cardiac chamber contracts, blood then passes through the 4. (hint: think three) and into the 5. . As this lower cardiac chamber contracts, blood then passes through the 6. and into the 7. . These are the only arteries in the body that carry deoxygenated blood. Once blood reaches the 8. (hint: organs in the pleural cavities), gas exchange occurs as CO2 is let off and O2 is picked up by red blood cells. The blood continues its journey toward the left side of the heart through the 9. , which are the only veins in the body to carry oxygenated blood. Blood then enters the heart at the 10. , passes through the 11. (also known as the 12. ), and enters the 13. . As this lower cardiac chamber contracts, blood is then pumped through the 14. into the 15. to carry oxygenated blood to the systemic circulation.
Sri K.
Blood flow through the heart begins with the right atrium receiving deoxygenated blood from the body. The blood then passes through the tricuspid valve into the right ventricle. From the right ventricle, the blood is pumped into the pulmonary trunk, which splits into the pulmonary arteries. The pulmonary arteries carry the blood to the lungs where it is oxygenated. Oxygenated blood returns to the heart through the pulmonary veins, entering the left atrium. The blood then flows through the bicuspid valve into the left ventricle. Finally, the blood is pumped out of the heart through the aortic valve into the aorta, which distributes oxygenated blood to the rest of the body.
Adi S.
Trace the path of a drop of blood, starting at the right atrium and returning to the right atrium, through the pulmonary and systemic circuits of the cardiovascular system. Identify the chambers, valve, and vessels ( except specific systemic blood vessels that are not directly associated with the heart) indicate whether the blood is oxygenated or deoxygenated in each area.
Lainey R.
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