Physiology Answers
1. Consider the equation F = DP/R. It describes the flow (F) of fluid in a tube in which there is a pressure difference (DP) between the two ends and a resistance (R) to flow. The equation indicates that(2.0 Score )
A.the flow of fluid from point A to point B in a tube depends upon the difference in pressure between A and B.
B.the flow of fluid in a tube depends upon the absolute pressure at the beginning of the tube.
C.the greater the resistance to flow in a tube, the greater the flow for any given pressure difference.
D.the flow of fluid in a tube depends upon the absolute pressure at the beginning of the tube and the greater the resistance to flow in a tube, the greater the flow for any given pressure difference are correct.
E.the flow of fluid from point A to point B in a tube depends upon the difference in pressure between A and B and the greater the resistance to flow in a tube, the greater the flow for any given pressure difference are correct.
2. Which of the following is not an effect of sympathetic stimulation of the heart?(2.0 Score )
A.It increases the amount of calcium ion entering cardiac cells.
B.It decreases the duration of systole.
C.It decreases the slope of the pacemaker potential.
D.It increases heart rate.
E.It increases the rate of cross-bridge cycling in ventricular cells.
3. Which of the following statements concerning the capillaries is false?(2.0 Score )
A.Velocity of blood flow is slower in the capillaries than in the arteries.
B.Increasing capillary hydrostatic pressure decreases the likelihood that filtration will occur.
C.It is possible for a capillary to filter at its arterial end and absorb at its venous end.
D.Discontinuous endothelium is more likely to be found in liver capillaries than in brain capillaries.
E.Large proteins that enter the interstitial fluid are returned to the circulation via the lymphatic system.
4. The right side of the heart pumps blood through the circulation and the left side pumps
A.the flow of fluid from point A to point B in a tube depends upon the difference in pressure between A and B.
B.the flow of fluid in a tube depends upon the absolute pressure at the beginning of the tube.
C.the greater the resistance to flow in a tube, the greater the flow for any given pressure difference.
D.the flow of fluid in a tube depends upon the absolute pressure at the beginning of the tube and the greater the resistance to flow in a tube, the greater the flow for any given pressure difference are correct.
E.the flow of fluid from point A to point B in a tube depends upon the difference in pressure between A and B and the greater the resistance to flow in a tube, the greater the flow for any given pressure difference are correct.
2. Which of the following is not an effect of sympathetic stimulation of the heart?(2.0 Score )
A.It increases the amount of calcium ion entering cardiac cells.
B.It decreases the duration of systole.
C.It decreases the slope of the pacemaker potential.
D.It increases heart rate.
E.It increases the rate of cross-bridge cycling in ventricular cells.
3. Which of the following statements concerning the capillaries is false?(2.0 Score )
A.Velocity of blood flow is slower in the capillaries than in the arteries.
B.Increasing capillary hydrostatic pressure decreases the likelihood that filtration will occur.
C.It is possible for a capillary to filter at its arterial end and absorb at its venous end.
D.Discontinuous endothelium is more likely to be found in liver capillaries than in brain capillaries.
E.Large proteins that enter the interstitial fluid are returned to the circulation via the lymphatic system.
4. The right side of the heart pumps blood through the circulation and the left side pumps