Cardiovascular Review Sheet

Topics: Heart, Blood vessel, Blood Pages: 3 (878 words) Published: June 11, 2013
REVIEW SHEET
EXERCISE 5
Cardiovascular Dynamics

NAME:
LAB TIME/DATE:

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? 1017.2 mmHg

3. Describe the relationship between flow rate and radius size. The relationship between the flow rate and the radius size is direct with the formula flow rate=radius to the fourth power.

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

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. The relationship is inversed; meaning a fluid that has a high viscosity has a slow flow because it resists the flow. Fluid that has a low viscosity will flow faster because it is less resistance to the flow.

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 blood vessels allow more blood to flow through regardless of viscosity. 8. What effect would anemia have on blood flow? Why? The effect would cause a decrease in blood flow because anemia causes the blood vessels to constrict.

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? 10mm 10. Describe the relationship between flow tube length and fluid flow rate. The relationship between flow tube length and fluid flow rate is when the tube length is shorter the faster the flow.

11. What effect do you think obesity would have on blood flow? Why? When blood vessels lengthen, they cause a flow of blood...
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