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Transcript
Rozema Anatomy—Spring 2010 Name: _______________________________________________________ Hr: ________________ Unit 3 Circulatory System—Week 2 Practice Questions 1) Describe the developmental pathway of a red blood cell, beginning at hemocytoblast: _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 2) Why do red blood cells have no nucleus? _____________________________________________ _________________________________________________________________________________ 3) What is erythropoietin used for? ____________________________________________________ _________________________________________________________________________________ 4) What will happen to erythropoietin production if your RBC count is too high? _________________________________________________________________________________ 5) What will happen to erythropoietin production if blood-oxygen levels drop? _________________________________________________________________________________ 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? _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 8) When does the “clotting cascade” or “prothrombin activator” begin during hemostasis? _________________________________________________________________________________ _________________________________________________________________________________ Rozema Anatomy—Spring 2010 9) What does fibrinogen combine with to form the mesh-like net (fibrin), which catches red blood cells? _________________________________________________________________________________ 10) What is the difference between a thrombus and an embolus? _________________________________________________________________________________ _________________________________________________________________________________ 11) What is thrombocytopenia? _______________________________________________________ _________________________________________________________________________________ 12) What is hemophilia? ______________________________________________________________ _________________________________________________________________________________ 13) What is the overall function of your cardiovascular system? _____________________________ _________________________________________________________________________________ _________________________________________________________________________________ 14) What does the pericardium do for your heart? _________________________________________________________________________________ _________________________________________________________________________________ 15) Which tissue-layer of the heart contains the contractile muscle fibers? _________________________________________________________________________________ 16) Which tissue-layer lines the chambers of the heart? ____________________________________ 17) What and Where are the atria (in your heart)? _________________________________________________________________________________ 18) What and Where are the ventricles (in your heart)? _________________________________________________________________________________ 19) What are the 2 sides of the heart separated by? _________________________________________________________________________________ Rozema Anatomy—Spring 2010 20) Describe the pulmonary pathway of blood: _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 21) Describe the systemic pathway of blood: _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 22) Name the 4 valves in the heart: _________________________________________________________________________________ 23) Describe the position of the valves during cardiac relaxation: _________________________________________________________________________________ _________________________________________________________________________________ 24) Describe the position of the valves during cardiac contraction: _________________________________________________________________________________ _________________________________________________________________________________ Rozema Anatomy—Spring 2010 LABEL ALL OF THIS! BAM! 25) In your own words, what is the conduction system of the heart? _________________________________________________________________________________ Rozema Anatomy—Spring 2010 26) Describe the conduction system (depolarization) of the heart: _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ 27) Where can you find the SA Node, and what does it do? _________________________________________________________________________________ 28) Where can you find the AV Node, and what does it do? _________________________________________________________________________________ 29) Where is the AV bundle? ___________________________________________________________ 30) What is the difference between diastole and systole? _________________________________________________________________________________ 31) What happens to your ventricles, AV valves, and semilunar valves during diastole? _________________________________________________________________________________ _________________________________________________________________________________ 32) What happens to your ventricles, AV valves, and semilunar valves during systole? _________________________________________________________________________________ _________________________________________________________________________________ 33) What is really going on when you hear that “lub dup” of your heart? _________________________________________________________________________________ _________________________________________________________________________________ 34) Holy mostaccoli, you can actually hear your blood flowing through your veins…. WHAT’S GOIN’ ON?! _________________________________________________________________________________ Rozema Anatomy—Spring 2010 35) What is cardiac output (in your own words)? _________________________________________________________________________________ 36) Your heartrate is 100beats / minute. Your stroke volume is 0.2L. Is your cardiac output average? _________________________________________________________________________________ _________________________________________________________________________________ 37) Your heartrate is 75beats/minute. Your stroke volume is 0.1L. What is your cardiac output? Is this normal? _________________________________________________________________________________ _________________________________________________________________________________ 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!
