Aincrease the flow through the network by33 B.increase the network resistance by 33% C.lower the filtration coefficient of the network D.A and B E.B and C Question#6 When linear velocity of flow in a blood vessel is 100 cm/sec and the volume flow is 200 ml/sec.the cross-sectional area is: A.300cm2 B.100cm2 C 0.5 cm2 D2.0c配 E.none of these Question#7 Select the single best answer to the numbered question. Given laminar flow of a Newtonian fluid through a cylindrical tube with a fixed driving pressure,if the radius is doubled,flow will A.double. B.remain unchanged. C.quadruple D.increase 16-fold Eincrease 8-fold. Question #8 Red blood cells have a relatively small effect on the viscosity of blood in arterioles due to their biconcave disc shape. A Irue B.False Question 9 The total force exerted on the semilunar valves by the pressure of the blood would be doubled if the diameter of the valve were doubled. A.True
A. increase the flow through the network by 33% B. increase the network resistance by 33% C. lower the filtration coefficient of the network D. A and B E. B and C -------------------------------------------------------------------------------- Question # 6 When linear velocity of flow in a blood vessel is 100 cm/sec and the volume flow is 200 ml/sec , the cross-sectional area is: A. 300 cm2 B. 100 cm2 C. 0.5 cm2 D. 2.0 cm2 E. none of these -------------------------------------------------------------------------------- Question # 7 Select the single best answer to the numbered question. Given laminar flow of a Newtonian fluid through a cylindrical tube with a fixed driving pressure, if the radius is doubled, flow will: A. double. B. remain unchanged. C. quadruple D. increase 16-fold. E. increase 8-fold. -------------------------------------------------------------------------------- Question # 8 Red blood cells have a relatively small effect on the viscosity of blood in arterioles due to their biconcave disc shape. A. True B. False -------------------------------------------------------------------------------- Question # 9 The total force exerted on the semilunar valves by the pressure of the blood would be doubled if the diameter of the valve were doubled. A. True
B.False Question#10 The driving pressure for a given segent of the circulation is the difference between the input pressure and output pressure to the segment. A.True B.False Question#11 Blood is thicker than water mainly because of the semi gel nature of the plasma proteins in the body. A True B.False Question#12 The velocity of the red cells is usually faster than the velocity of the plasaa in the microvessels A.True B.False Question 13 If a Newtonian fluid is flowing through a constriction in a circular pipe,which of the following is A.the velocity of the fluid increases as the fluid exits the constriction. B.the pressure measured by a catheter inserted into the lumen at the constriction would be lower than the pressure measured at the entrance to the constriciton. c.the velocity through the constriction would vary with the 4th power of the radius of the tube. D.the total energy of the fluid would increase as the fluid accelerates through the constriction. Question 14 If the cardiac output is 6L/min and the arterial pressure is 120mm Hg,then the capillary pressure must be two aillimeters of mercury. A.True B.False
B. False -------------------------------------------------------------------------------- Question # 10 The driving pressure for a given segment of the circulation is the difference between the input pressure and output pressure to the segment. A. True B. False -------------------------------------------------------------------------------- Question # 11 Blood is thicker than water mainly because of the semi gel nature of the plasma proteins in the body. A. True B. False -------------------------------------------------------------------------------- Question # 12 The velocity of the red cells is usually faster than the velocity of the plasma in the microvessels. A. True B. False -------------------------------------------------------------------------------- Question # 13 If a Newtonian fluid is flowing through a constriction in a circular pipe, which of the following is true? A. the velocity of the fluid increases as the fluid exits the constriction. B. the pressure measured by a catheter inserted into the lumen at the constriction would be lower than the pressure measured at the entrance to the constriciton. C. the velocity through the constriction would vary with the 4th power of the radius of the tube. D. the total energy of the fluid would increase as the fluid accelerates through the constriction. -------------------------------------------------------------------------------- Question # 14 If the cardiac output is 6L/min and the arterial pressure is 120 mm Hg, then the capillary pressure must be two millimeters of mercury. A. True B. False --------------------------------------------------------------------------------