Physiology 3120 Lecture Notes - Starling Equation, Extracellular Fluid, Colloid

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indigoweasel955

26 Nov 2011

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If you add an isotonic nacl load, there will be an increase in volume in the ecf, but no osmosis will occur because there is no concentration gradient: site of exchange is the capillary endothelium. Thus the composition of the interstitial fluid & the plasma is very similar. Filtration = movement out of the capillary. Pressure from the blood in the capillary. Varies from one end to the other (25mmhg to 10mmhg) Promotes filtration: interstitial fluid hydrostatic pressure (pif) Pressure on the fluid in the interstitial space. Varies from organ to organ (-6 to +6 mmhg) Can cause filtration (when pressure is negative) or reabsorption (when pressure is positive: interstitial colloid osmotic (oncotic) pressure ( if) Pressure caused by osmosis due to proteins in the interstitial space. Causes filtration: plasma colloid osmotic (oncotic) pressure ( p) Pressure caused by osmosis due to proteins in the plasma. Nfm = kf [ (pc pif) ( p if) ]

Related Questions

1. An empty tank is slowly filled with air. Water is then added to the tank, decreasing the volume for the air in the tank. The temperature remains constant. What happens to the pressure?

a) The pressure increases.

b) The pressure doesn't change.

c) The pressure decreases.

d) Pressure has nothing to do with this problem.

2. An empty tank is filled with air and then placed in a freezer for 8 hours. What happens to the pressure?

a) The pressure increases.

b) The pressure doesn't change.

c) The pressure decreases.

d) Pressure has nothing to do with this problem.

3. A container with a piston is filled with hydraulic fluid. The fluid is then heated up with a blow torch. What happens with the piston if the pressure is constant?

a) The temperature of the fluid decreases.

b) The piston will rise.

c) The pressure will increase.

d) The piston will drop.

4. A block of aluminum is placed in a pan of boiling water. What will happen to the block of aluminum?

a) The block will get larger while in the water.

b) The block is going to retain the heat applied to it.

c) The block will change properties.

d) None of the above.

silverhedgehog171

Which of the following statements are IMPOSSIBLE? Choose allthat apply.

____ A perfectly functioning hydraulic had a pressure of 24 psi inthe fluid near the small piston and a pressure of 24 psi in thefluid near the big piston.

____ A 31 L container displaced 34 L of water when partiallysubmerged

____ A substance underwent condensation during which itstemperature changed 5 K.

____ A 24 N brick was fully submerged in water. The buoyant forceon the brick was 15 N. As a direct result, the brick sank.

____ Last Wednesday, the Sun heated the Moon via conduction.

____ The temperature inside a physics laboratory chamber wasmeasured to be 18 Â°F.

QuestionDetails:

iii) For an endothermic reaction, what can you say abouttheequilibrium constant K1 measured at a low temperature T1withrespect to K2 measured at a high temperature T2?

_____ K1 < K2 _____ K1 = K2 _____ K1 > K2

iv) Typically, activity for a solvent is â¦

_____ pressure (P) _____ concentration (c) _____ molefraction(x)

i) As you heat water on the stove, bubbles start to form in thepanbelow the boiling temperature because gas comes out ofsolution.You can conclude that the enthalpy of dissolution of thegas isexothermic. - is it exothermic or endo????

v) Points A and B are separated by the very thin interfacebetweenthe air and liquid.

What can you say about the pressures at points A and B?

_____ PA < PB _____ PA = PB _____ PA > PB

thanks bluel ibra

Physiology 3120 Lecture Notes - Starling Equation, Extracellular Fluid, Colloid

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