Chapter 5 Fluids Flashcards
1
Q
Bernoulli’s principal and Venturi effect
A
Increase in velocity of fluid means pressure decreases
2
Q
Laminar flow
A
Laminar flow is streamlined in a straight line
3
Q
Poiseuille’s law
A
Flow (F) = pi x r^4 x pressure difference / 8 x fluid viscosity x length of the tube
Polycythemia: viscosity is high so flow is down
Anemia: low viscosity so higher flow
4
Q
Resistance to flow R= change in pressure / flow
A
R= 8 x blood viscosity x tube length / pi X radius^4
When radius is doubled, the resistance will decrease 16 folds
