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UAB / Biology / BY 490 / describe what the left and right beakers in the experiment correspond

describe what the left and right beakers in the experiment correspond

describe what the left and right beakers in the experiment correspond

Description

School: University of Alabama at Birmingham
Department: Biology
Course: Human Physiology
Professor: Wibbles
Term: Fall 2015
Tags:
Cost: 50
Description: Exercise 5: Cardiovascular Dynamics: Activity 7: Compensation in Pathological Cardiovascular Conditions Lab Report Pre-lab Quiz Results You scored answering 4 out of 4 questions correctly
Uploaded: 06/06/2017
4 Pages 626 Views 0 Unlocks
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Exercise 5: Cardiovascular Dynamics: Activity 7: Compensation in Pathological Cardiovascular Conditions Lab Report Pre-lab Quiz Results You scored answering 4 out of 4 questions correctly.100% by  1. Which of the following could cause an increase in peripheral resistance in the blood vessel?You correctly answered: b. atherosclerosis 2. Which structures in the heart ensure that one-way flow occurs? You correctly answered: d. valves 3. Which of the following might be seen in both the diseased heart and the athlete's heart? You correctly answered: c. thicker myocardium 4. The type of resistance increased in aortic valve stenosis isYou correctly answered: d. increased left-ventricular afterload. 04/18/17 page 1Experiment Results  Predict Question: Predict Question 1: You will now test three mechanisms to compensate for the decrease in flow rate caused by the decreased flow tube radius. Which mechanism do you think will have the greatest compensatory effect? Your  answer : c. decreasing the pressure in the right (destination) beaker  Predict Question 2: What do you think will happen if the pump pressure and the beaker pressure are the same? Your answer : c. Flow will stop.  Stop & Think Questions: Narrowing of the right flow tube radius simulates  Your answer : a. bicuspid valve stenosis. Correct answer: c. aortic valve stenosis. What does increasing the pump pressure correspond to in the human heart? You correctly answered: d. increasing the force of contraction What does decreasing the right (destination) beaker correspond to in the human heart?  You correctly answered: b. decreasing afterload Experiment Data: Condition Flow Rad. L Rad. R Str. V Rate Press. L Press. Dif. R Normal 5086.8 3.0 3.0 70 72.7 40 40 Aortic stenosis 3310.0 3.0 2.5 70 47.3 40 40 Increased preload 3892.9 3.5 2.5 70 55.6 40 40 Increased preload 4256.7 4.0 2.5 70 60.8 40 40 Increased preload 4479.5 4.5 2.5 70 64.0 40 40 Increased contractility 3826.3 3.0 2.5 70 54.7 40 50 Increased contractility 4270.3 3.0 2.5 70 61.0 40 60 Decreased contractility 4656.3 3.0 2.5 70 66.5 40 70 Decreased afterload 3826.3 3.0 2.5 70 54.7 40 80 Decreased afterload 4270.3 3.0 2.5 70 61.0 40 60 Decreased afterload 4656.3 3.0 2.5 70 66.5 40 70


What does decreasing the right (destination) beaker correspond to in the human heart?




What does increasing the pump pressure correspond to in the human heart?




Predict Question 2: What do you think will happen if the pump pressure and the beaker pressure are the same?



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04/18/17 page 2Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Which of the following compensatory mechanisms was not tested? You correctly answered: c. decreasing the pressure in the left (source) beaker 2. In an actual heart, what is the most logical way to compensate for a decrease in flow tube radius? You correctly answered: b. adjust the force of contraction of the heart 3. Without a difference in pressure between the pump and the destination beakerYou correctly answered: a. the valve will  not open. 4. Athletes experience an overall __________ in peripheral resistance, so the heart generates __________ pressure  todeliver the same amount of blood. An athlete's arterial pressure would likely be __________ than that in a non athlete. You correctly answered: d. decrease, less, lower 04/18/17 page 3Review Sheet Results 1. Explain how the heart could compensate for changes in peripheral resistance. Your answer: By increasing contractility 2. Which mechanism had the greatest compensatory effect? How well did the results compare with your prediction? Your answer: Decreasing the pressure in the right beaker made biggest result as I predicted 3. Explain what happened when the pump pressure and the beaker pressure were the same. How well did the  resultscompare with your prediction? Your answer: I failed with this question by misreading. When there is no pressure gradient, there is no flow 4. Explain whether it would be better to adjust heart rate or blood vessel diameter to achieve blood flow changes at a local level (for example, in just the digestive system). Your answer: Adjusting blood vessel diameter is the best way to change blood flow cause the fourth power of diameter efect blood flow  which differs from others 04/18/17 page 4
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