Physical foundations of Physiology

Question 1

Poiseuille’s law governs steady-state laminar flow in long narrow tubes

Answer 1

• laminar flow: based on Renold’s number
• Flow-through body often approximated as laminar

Question 2

Definition of viscosity

Answer 2

(F/A) = n(dv/dy)

Question 3

Law of Laplace

Answer 3

• The larger the vessel radius, the larger the wall tension required to withstand a given internal fluid pressure
• Pressure = (2Thickenss Tension)/Radius
• at a constant pressure, tension in a filled sphere can be decreased by increasing the thickness of the wall

Question 4

Coulombs law

Answer 4

F = (q1q2)/(aπE r^2)