BME_501_Cardiovascular_System_Midterm_Mock_Exam

BME_501_Cardiovascular_System_Midterm_Mock_Exam - BME 501...

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1 BME 501 Cardiovascular System Midterm Exam NAME___________ Study Guide The individual blood cell types have been labeled. Identify the cell types according to the following questions. a. Which cell type becomes sickle in some African Americans? Choose one. b. Which cell type secretes histamine in response to allergic reactions? Choose one. c. Which cell type(s) respond to bacterial infection? Choose three types. d. Which cell type is involved in immune reactions in response to organ transplant or prosthetic heart valves? (Choose one) e. Which cell type(s) respond to secondary hemostasis? (Choose two) 8. Give two reasons that account for the pulsatile nature of blood flow in arteries? (2 points) 9. Give two reasons that account for the non-pulsatile or laminar flow nature of blood flow at the capillary level? (2 points) 10. Give one reason that accounts for the non-pulsatile nature of blood flow in the veins? (1 point) 11. Give two reasons that account for the unidirectional blood flow in the veins? (2 point)
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2 Chapter 1 1) Hemostasis a. Hemostasis I - What is the sequence of event that leads to thrombosis? -How does vasoconstriction occur? -What is an individual who is deficient in von Willebrand factor (vWF) is likely to suffer from prolonged bleeding? b. Hemostasis II i. Coagulation Factors: The coagulation factors circulate in the plasma as cofactors or as procoagulants, and, when activated supply some of the components needed for clot formation. -The last stage of coagulation is fibrinolysis, which is the dissolution and localization of a fibrin clot. These functions are carried out by enzymes and their inhibitors. A disruption or breach of the fine balance of this fibrinolytic system can result in bleeding or thrombosis. -Disequilibrium between fibrinolysis and thrombosis can lead to bleeding or blood clots. a. Give some potential reasons that prolonged sedentary position during trans- continental flight predisposes an individual to deep venous thrombosis (DVT). b. In a healthy individual, what are two possible mechanisms to prevent venous stasis? 2) Blood flow a. Navier-Stokes Equation i. The Navier-Stokes equations consist of a time-dependent continuity equation for conservation of mass , three time-dependent conservation of momentum equations and Clot lysis At equilibrium Blood coagulation Blood coagulation Clot lysis Bleeding Blood coagulation Clot lysis Blood clots Key Concepts of Part II Navier-Stokes Equations 3-D unsteady flow where u = velocity vector field, = thermodynamic internal energy , p = pressure, T = temperature, = density, = viscosity, KH = heat conduction coefficient, F = external force per unit mass, and
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3 a time-dependent conservation of energy equation . These equations describe how the velocity, pressure , temperature , and density of a moving fluid are related. ii. At steady state, which term is “0” or cancelled?
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BME_501_Cardiovascular_System_Midterm_Mock_Exam - BME 501...

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