Question

Transcribed image text: Effect of flow tube Length 4. How does increasing the flow tube length affect fluid flow? Explain why changing blood vessel length would or would not be a reasonable method for the body to control blood flow. Effect of Pressure 5. How does decreasing the pressure affect fluid flow? Describe what happens to pressure and flow during exercise and explain why they change in that way. Effect of Stroke Volume 6. Cardiac Output = Stroke Volume x Heart Rate a) What happened to the pump's rate as its stroke volume was increased? What happened to cardiac output? b) What do you think might happen to the pressure in the pump during filling if the valve in the right flow tube became leaky?

Answer 1

Increasing the flow tube length decreases fluid flow. Changing blood vessel length would not be a reasonable method for the body to control blood flow because it would require significant energy and time. Decreasing the pressure decreases fluid flow. During exercise, pressure and flow increase because the body needs more oxygen and nutrients. Increasing stroke volume increases cardiac output. If the valve in the right flow tube became leaky, the pressure in the pump during filling would decrease.