# Elvis Experiment

The Elvis Experiment Introduction: In this experiment we will determine how the difference in length and diameter of a blood vessel have an effect on the resistance of blood flow and how the viscosity of blood will also effect the resistance of blood flow in a blood vessel. Observation: My mom is a big Elvis fan and she always wondered how his health affected his death. Knowing that he had high cholesterol and high blood pressure I decided to do an experiment on what factors may have had an effect on his high cholesterol and high blood pressure.

Hypothesis: I know that the longer the length of the tube, the smaller the diameter of the tube, and the thicker the viscosity of a substance the greater the resistance, therefore it will take longer for the substance to pass through it. Controlled Factors: Independent: length, diameter, viscosity Dependent: Amount of time for the fluid to pass Experimental Design: Procedure A: Length Using a short 40 cm tube attach it to a ring stand with a clamp. Arrange and position the tube making sure that it is horizontal. Put an empty beaker at the end of the tube to catch the substance that flows through the tube.

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Fill a 100 ml graduated cylinder with water, adding a drop of food coloring to it. (Food coloring will make it easier to see the fluid as it flows through the tube) Using a funnel, pour the 100 ml of water down the tube. Record the amount of time it took for all the fluid to fall in to beaker. Repeat Steps 2-6 using a long 77cm tube. Procedure B: diameter Using a 40 cm tube with a 7mm diameter attach it to a ring stand with a clamp. Arrange and position the tube making sure that it is horizontal. Put an empty beaker at the end of the tube to catch the substance that flows through the tube.

Fill a 100 ml graduated cylinder with water, adding a drop of food coloring to it. (Food coloring will make it easier to see the fluid as it flows through the tube) Using a funnel, pour the 100 ml of water down the tube. Record the amount of time it took for all the fluid to fall in to beaker. Repeat steps 2-6 using a 40 cm tube with a 3 mm diameter. Procedure C: Viscosity Using a 40 cm tube attach it to a ring stand with a clamp. Arrange and position the tube making sure that it is horizontal. Put an empty beaker at the end of the tube to catch the substance that flows through the tube.

Measure 35 ml of syrup in a graduated cylinder. Using a funnel, pour the 35 ml of syrup down the tube. Record the amount of time it took for all the syrup to fall into the beaker. Repeat steps 1-6 using 35 ml of water. Materials: Tubing of various lengths and diameter Syrup Beakers (x2) Ring stands with clamps Funnels Water Food coloring Graduated cylinder Stop watch Results: Length |Short 40 cm |Long 77 cm | |1. 56 secs |2. 81 secs | |2. 06 secs |2. 7 secs | |2. 44 secs |2. 43 secs | Average: 2. 02 secs (40 cm)2. 74 secs (77 cm) diameter |Narrow 3 mm |Wide 7 mm | |8. 72 secs |1. 31 secs | |8. 16 seccs |1. 13 secs | |7. 85 secs |1. 44 secs |

Average: 8. 24 secs (3 mm)1. 29 secs (7 mm) Viscosity |35 ml water |35 ml syrup | |1. 56 secs |49. 00 secs | |2. 06 secs |36. 09 secs | |2. 44 secs |37. 03 secs | Average: 2. 02 secs (35 ml water)40. 71 secs (35 ml syrup) We observed that the relationship between the length of a tube and it’s resistance.

We used a 40 cm short tube and 77 cm long tube. During our first trial with the 40 cm tube we recorded a time of 1. 56 seconds for all the water to fall into the beaker, the second trial was 2. 06 seconds and the third trial was 2. 44 seconds. The average of the three trials was 2. 02 seconds. With the 77 cm tube we recorded a time of 2. 81 seconds during the first trial, 2. 97 during the second trial, and 2. 43 seconds during the third trial. The average time for the 77 cm tube was 2. 74 seconds. After we observed how diameter has an influence on resistance.

During our first trial with the 3 mm diameter, we recorded a time of 8. 72 seconds, second trial was 8. 16 seconds, and the third trial was 7. 85 seconds. The average of the three trials was 8. 24 seconds. With the 7 mm diameter tube we recorded a time of 1. 31 during the first trial, 1. 13 during the second trial, and 1. 44 during the third trial. The average of the the three trials was 1. 29 seconds. Lastly, we observed how viscosity may have an affect on resistance as well. We used 35 ml of water and 35 ml of syrup. During our first trial with the syrup we recorded a time of 49. 00 seconds, 36. 0 seconds during the second trial, and 37. 03 seconds for the third trial. The average of the three trials was 40. 71 seconds. During our first trial with the water, we recorded a time of 1. 56 seconds, 2. 06 seconds during the second trial, and 2. 44 seconds during the third trial. The average of the three trials was 2. 02 seconds. Graphs: Conclusion: Dear Elvis, I am college student at Southwestern Community College. My physiology class and I performed an experiment where we observed the different factors that may influence the resistance of blood flow through a blood vessel using tubes, water, and syrup.

Ultimately, we determined that the greater the length of a blood vessel, the greater the resistance; the smaller the diameter of a blood vessel, the greater the resistance; and the thicker the viscosity of blood, the greater the resistance. In order for you to lower your blood pressure you should stop eating such high cholesterol foods such as peanut butter and fried foods. The cholesterol builds up in your vessels, making them narrower and causing your blood flow to become high in resistance.

Also, you may consider taking an anticoagulant to help with any blood clots that may occur. However, some anticoagulants may rapidly lower your blood pressure, putting you in more risk of death. Exercising is the best thing you may do for your body and health. Without any exercise your heart has to work harder to pump your blood because of your clogged arteries. You should really take our experiment and results to consideration. Your health is extremely important and without the right diet and exercise you may be at risk for more than just a high blood pressure.