Activity 1: Flow Tube Radius
1 - Linear or Exponential?
2 - How do our blood vessels alter blood flow? Increase and decrease radius (1) via
contraction of smooth muscle (1) Under control of the ANS (0.5)
Activity 2: Effect of Viscosity
1 - Inverse or Direct?
2 - Viscosity is NOT an appropriate mechanism for normal flow control. No (1) and
* Too many or too few RBCs
* Anemia or clogged arteries
* Time to take effect is very long
Activity 3: Effect of Tube Length
2 - Altering tube length is NOT an appropriate mechanism for normal flow control. No (1)
and explanation (1).
* Can’t grow and retract blood vessel growth in an adult
* Would take a long time
Activity 4: Effects of Pressure
1 - Pressure changes cause linear flow change. Radius changes cause exponential flow change
(1) OR radius change allows for local control (1).