Physio Ex Exercise 5

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Physio Ex Exercise 5

By | September 2011
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Review Sheet
Exercise 5
Cardiovascular Dynamics
NAME
LAB DATE/TIME

Vessel Resistance

The following questions refer to Activity 1: Studying the Effect of Flow Tube Radius on Fluid Flow.

1.At which radius was the fluid flow rate the highest?
6.0 mm

2.What was the flow rate at this radius?
1017.4 mmHg

3.Describe the relationship between flow rate and radius size. It was direct

4.What happens to blood vessels in the body if increased blood flow is needed? They dilate to increase flow

The following questions refer to Activity 2: Studying the Effect of Viscosity on Fluid Flow.

5.At what viscosity level was the fluid flow rate the highest? 1.0

6.Describe the relationship between flow rate and viscosity. Inverse

7.Was the effect of viscosity greater or less than the effect of radius on fluid flow? Why? Less, the radius of blood vessels effect flow more because the large vessels allow more blood to flow through regardless of its viscosity.

8.What effect would anemia have on blood flow? Why?
It would decrease blood flow because the blood vessels constrict in anemics.

The following questions refer to Activity 3: Studying the Effect of Flow Tube Length on Fluid Flow.

9.At what flow tube length was the flow rate the highest?
10 mm

10.Describe the relationship between flow tube length and fluid flow rate. The shorter the length the faster the flow.

11.What effect do you think obesity would have on blood flow? Why? Blood vessels lengthen causing flow of blood to decrease.

The following questions refer to Activity 4: Studying the Effect of Pressure on Fluid Flow.

12.What effect did increased pressure have on the fluid flow rate? The greater the pressure the faster the flow.

13.In the body, where does the driving pressure for fluid flow come from? The heart.

Pump Mechanics

The following questions refer to Activity 5: Studying the Effect of Radius on Pump Activity.

14.What happened to...

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