Rozema Anatomy—Spring 2010

Name: ______Hr: ______

Unit 3Circulatory System—Week 2 Practice Questions

1)Describe the developmental pathway of a red blood cell, beginning at hemocytoblast:
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2)Why do red blood cells have no nucleus? ______
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3)What is erythropoietin used for? ______
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4)What will happen to erythropoietin production if your RBC count is too high?
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5)What will happen to erythropoietin production if blood-oxygen levels drop?
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6)What is hemostasis in your own words? ______

7)AHHHH you cut your arm off! Blood vessels are hanging all over the place; blood is spraying out across the walls! What is happening inside of you to attempt to clot your stump?
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8) When does the “clotting cascade” or “prothrombin activator” begin during hemostasis?
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9)What does fibrinogen combine with to form the mesh-like net (fibrin), which catches red blood cells?
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10)What is the difference between a thrombus and an embolus?
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11) What is thrombocytopenia? ______
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12)What is hemophilia? ______
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13)What is the overall function of your cardiovascular system? ______
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14)What does the pericardium do for your heart?
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15)Which tissue-layer of the heart contains the contractile muscle fibers?
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16)Which tissue-layer lines the chambers of the heart? ______

17)What and Where are the atria (in your heart)?
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18)What and Where are the ventricles (in your heart)?
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19)What are the 2 sides of the heart separated by?
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20)Describe the pulmonary pathway of blood:
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21)Describe the systemic pathway of blood:
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22)Name the 4 valves in the heart:
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23)Describe the position of the valves during cardiac relaxation:
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24)Describe the position of the valves during cardiac contraction:
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LABEL ALL OF THIS! BAM!

25)In your own words, what is the conduction system of the heart?
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26)Describe the conduction system (depolarization) of the heart:
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27)Where can you find the SA Node, and what does it do?
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28)Where can you find the AV Node, and what does it do?
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29)Where is the AV bundle? ______

30)What is the difference between diastole and systole?
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31)What happens to your ventricles, AV valves, and semilunar valves during diastole?
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32)What happens to your ventricles, AV valves, and semilunar valves during systole?
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33)What is really going on when you hear that “lub dup” of your heart?
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34)Holy mostaccoli, you can actually hear your blood flowing through your veins…. WHAT’S GOIN’ ON?!
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35)What is cardiac output (in your own words)?
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36)Your heartrate is 100beats / minute. Your stroke volume is 0.2L. Is your cardiac output average?
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37)Your heartrate is 75beats/minute. Your stroke volume is 0.1L. What is your cardiac output? Is this normal?
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38)According to Starling’s Law, The GREATER the cardiac muscle extension, the ______the contraction. This also means that if someone’s heart does not prepare “enough” for a contraction, they could have a weak pump!