Cardiac Assignment Worksheet

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School

Florida International University *

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Course

2023L

Subject

Biology

Date

Oct 30, 2023

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docx

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5

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Sabrina Isea BSC 2023L HUMAN CARDIAC INFORMATION POST QUESTIONS 1. The liquid portion of blood is called _____________________. Plasma 2. What are the 3 main functions of blood? The three main functions of blood are to transport, regulate, and protect against foreign molecules and diseases. 3. Where are the elements in blood formed? The elements in blood are formed from common bone marrow stem cells. 4. What are the 3 categories of formed elements in blood? The three categories of formed elements in blood are red blood cells, white blood cells, and platelets. 5. What is the primary role of RBCs? The primary role of red blood cells is oxygen and carbon dioxide exchange. 6. What portion of the red blood cell binds to oxygen? The portion of the red blood cell that binds to oxygen is hemoglobin. 7. An average adult has a total volume of blood of _____________ liters. 5.5 8. Water makes up what percentage of plasma? Water makes up 90% of plasma. 9. What are the functions of the water in plasma?
Water in plasma acts as a solvent, suspends the components of blood, absorbs molecules and the transports of thermal energy. 10. What does “bulk flow” mean? Bulk flow refers to the flow of blood with all constituents together and in one way. 11. Why is there such extensive branching of the vessels in the cardiovascular system? Branching assures that all cells in the body lie very close to a capillary. 12. All cells must lie within a short distance from what type of vessel? Capillaries 13. Why that vessel? Capillaries move nutrients and metabolic products between themselves and the surrounding cell. 14. Is blood flow through all organs an active or passive process? Blood flow is passive. 15. Which pressure is higher, arterial or venous? Why? Arterial pressure is higher because of the pumping action of the heart. 16. In a resting individual, how much blood at that time is in the capillaries? In a resting individual there is approximately 5% of blood in the capillaries. 17. What is the responsibility for the capillary volume? The capillary volume is responsible for supplying nutrients and removing metabolic products. 18. Blood leaves the heart through what vessels and returns to the heart through what vessels? Blood leaves the heart through the arteries and returns through the veins. 19. What are the two closed loop systems that both originate and return to the heart?
The two closed loop systems that both originate and return to the heart are the pulmonary and systematic circulation. 20. What comprises the pulmonary circulation? The pulmonary circulation is compromised of the right heart pump and the lungs. 21. What comprises systemic circulation? The systematic circulation is compromised of the left hear pump. 22. In the systemic circuit, blood is ejected out of the ______ ventricle via a single large artery, ____________. Left; the aorta. 23. Arteries branch into smaller vessels called __________ which then branch into ___________. Arterioles; capillaries 24. Blood starts its journey back to the heart through what vessels? Blood starts its journey back to the heart through the venules. 25. How many miles of capillaries are in an adult? There are 25,000 miles of capillaries in adults. 26. Describe the length and structure of a capillary. Capillaries are a little thicker than a single cell and consist of a layer of endothelial cells with a basement membrane. 27. Why does the capillary have such a minimal wall thickness? The minimal wall thickness makes it easier to allow the exchange of materials between cells in the tissues and blood. 28. What are the two major veins that feed into the heart?
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