The Effect Of Blood Pressure On Blood Flow Rate

Introduction: The cardiovascular system is composed of blood vessels, blood, and the heart. This allows the system to play an important role in the moving of both nutrients and wastes in and out of the blood to maintain an overall homeostasis within the body. The previously completed experiments each had the objective of understanding how various factors may have an influence on blood flow rate. These factors include the effect of blood vessel radius, the effect of blood viscosity, as well as the effect of blood vessel length, and the effect of blood pressure. This better understanding of cardiovascular dynamics was achieved with PhysioEx 9.1.

Hypothesis:
Hypothesis- Activity 1: Studying the Effect of Blood Vessel Radius on Blood Flow
Materials and Methods:
Materials:
-Laboratory Manual for Anatomy and Physiology 5th edition, by Michael G. Wood
-Access to a computer
-Computer program (Pearson’s MyLabAndMastering PhysioEx 9.1)
Methods:
-Activity 1 included observing the effect that gradually increasing the radius of the flow tube has on the blood flow rate. The participants continued to increase the flow tube radius by 0.5 mm each time until it reached a radius of 5.0 mm. The data was recorded after each trial, and the left beaker was refilled afterwards.
-Activity 2 focused on fluid viscosity levels. The fluid viscosity was increased by 1.0 during each trial. Allowing the participants to observe the effects this had on the flow rate. This was repeated until the viscosity reached a level of 8.0
-Additionally, Activity 3 involved the increasing of flow tube length by 5 mm until the length of 40 mm was achieved.
-Activity 4 instructed the participants to increase the pressure by 23 mm Hg each trial until the value of 200 mm Hg was achieved. The data was recorded, and the left beaker was refilled following each