Exercise 5: Cardiovascular Dynamics: Activity 3: Studying the Effect of Blood Vessel Length on Blood Flow Rate Lab Report
Pre-lab Quiz Results
You scored 100% by answering 4 out of 4 questions correctly.
1. When the length of the blood vessel increases, which of the following also increases?
You correctly answered: d. both friction and surface area
2. Blood vessel length decreases
You correctly answered: c. when we lose weight.
3. Blood flow is
You correctly answered: b. directly proportional to vessel radius to the fourth power.
4. Which of the following correctly describes resistance to flow?
You correctly answered: a. Resistance to flow increases with increased vessel length.
Post-lab Quiz Results
You scored 50% by answering 2 out of 4 questions correctly.
1. Increasing the flow tube length is analogous to increasing blood vessel length. How did this affect the flow rate?
You correctly answered: b. The flow rate decreased.
2. Which of the following correctly describes the relationships between blood vessel length, resistance, and blood flow?
Your answer: a. Blood vessel length is inversely proportional to resistance and inversely proportional to blood flow.
Correct answer: c. Blood vessel length is directly proportional to resistance and inversely proportional to blood flow.
3. Which of the following correctly describes the relationships between blood vessel radius, resistance, and blood flow?
Your answer: c. Blood vessel radius is directly proportional to resistance and inversely proportional to blood flow.
Correct answer: d. Blood vessel radius is inversely proportional to resistance and directly proportional to blood flow.
4. Which of the following describes why the body might require an increase in vessel radius?
You correctly answered: a. to provide more blood flow and, therefore, nutrients to a particular body part
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