1-1: Describe the relationship between vessel radius and blood flow rate? Vessel radius has a direct relationship with blood flow. As blood vessels constrict (vasoconstriction), blood flow is decreased. As blood vessels dilate (vasodilatation), blood flow is increased.
1-2: Explain the effects that the flow tube radius change had on flow rate. How well did the results compare with your prediction? Increasing the flow tube radius resulted in an increase in the flow rate.
1-3: Describe the effect that radius changes have on laminar flow of a fluid?
1-4: Describe an advantage of slower blood velocity in some areas of the body, for example, in the capillaries of our fingers?
Summarize: ? write at least two complete sentences on what you observed by doing this experiment – think “big picture”
Activity 2: Studying the Effect of Blood Viscosity of Blood Flow Rate
Questions: ?answer each question; use full sentences; ask instructor if you need help.
2-1: Describe the components in the blood that affect viscosity?
2-2: What happens to blood flow rate when viscosity is increased?
2-3: What happens to blood flow during anemia?
2-4: Explain why the relationship between viscosity and blood flow rate is inversely proportional?
Summarize: ? write at least two complete sentences on what you observed by doing this experiment – think “big picture”
Activity 3: Studying the Effect of Blood Vessel Length on Blood Flow Rate
Questions: ?answer each question; use full sentences; ask instructor if you need help.
3-1: Is the relationship between blood vessel length and blood flow rate directly proportional or inversely proportional? Why?
3-2: Describe what happens to resistance when blood vessel length increases.
3-3: Describe the effect that obesity would have on blood flow and why.
3-4: In atherosclerosis, vessels become thickened because of deposits of cholesterol and plaque formation. Do you think that flow would be faster or slower in areas of plaque formation?
Summarize: ? write at least two complete sentences on what you observed by doing this experiment – think “big picture”
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