Answers to Review Questions for Lab 5

  1. From the equation, we see that a change of radius causes a change in blood flow that is proportional to the r4, which means that small changes in radius have large changes in blood flow.
  2. We wanted to make sure that the changes we were observing were due to the changes that were were making in the simulation.  If we had changed multiple factors, we wouldn't have been sure what was causing them.
  3. It means that as vessel length increases, blood flow decreases.
  4. The viscosity of the blood will decrease, and therefore the blood flow will increase.