Diffusion and Osmosis Flashcards
Diffusion equation
►Mass/ ► time
flow * concentration
►pressure/ ► distance
The rate of diffusion of a substance across a unit area is proportional to the concentration gradient
Fick’s Law
The greater the solubility of the gas in the liquid, the ______ will be the concentration gradient between the _______ _______ of the liquid and its ______ ______.
_____ soluble gas diffuses into the deeper layers of the liquid more rapidly.
- greater
- surface layer
- deeper layers
- More
The rate of diffusion of a gas is inversely proportional to the square root of its molecular weight.
I.e. the heavier gas the longer time to diffuse.
Graham’s Law
As osmotic pressure of ______ kPa is produced when __ mole solute is dissolved in _____ liters of solution at 0ºC.
101.33 kPa
1 mole
22.4 liters
What is normal about normal saline?
Osmolarity
Pressure brought about by plasma proteins is ______ _______.
It is osmotic pressure.
oncotic pressure
Oncotic pressure within the tissues generated by proteins is ____ kPa.
3.5 kPa
Urine osmolarity = ____ mOsm/Liter
1000
The oncotic pressure of colloid is ___ mmHg.
30mmHg
The negative pressure during inspiration draw ____ out of the ______.
fluid
capillaries
The difference between the ____ blood pressure and the _______ pressure in the alveoli is ____ than the osmotic pressure exerted by the ______ in the capillaries, hence no liquid exudes into the alveoli.
- capillary
- subatmospheric
- less
- colloids
