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Kaplan Qbank USMLE



Author9 Posts
  #1

in topic capillary exchange what is the value of k=filtration coefficient, and what is the value of reflection coefficient?

thanx.

  #2

pls any body who reply me. :roll:

  #3

If the capillary is impermeable to protein then reflection coefficient = 1. and if it is freely permeable to protein, then ref coef = 0

filtration constant is determined by the physical properties of the barrier (i.e., size and number of pores and the thickness of the barrier).

when u calculte these ques u dont need these values

___________________
I hear and I forget. I see and I remember. I do and I understand.
--Confucius

  #4

can u calculate this q pls.
Cp=+25mmHg

Pif= -2mmHg

oncotic prssure of capillary is = -20

and oncotic pressure of interstituim is= +1.

so can u calculate it pls.
thanx.

  #5

and answer in the book is +4. idon't know how?
and if we calculate net pressure ,if the interstitial hydrostatic pressure is -2mmHg.
pls reply me.

thanx.

  #6

the ques in the book is
Hc=25
Hi=2
OPc=20
OPi=1
net pressure=(25-2)-(20-1)=23-19=+4(net filtration)

if Hi=-2
net press=(25-(-2))-(20-1)=27-19=+8(net filtration)

___________________
I hear and I forget. I see and I remember. I do and I understand.
--Confucius

  #7

but mash u know according to capillary exchange Hi is always in (-) and oncotic pressure of capilary is also always in (-)b/c they support reabsorption.
and also teacher said same thing in vidio lectures.
i m still confuse yarr.
pls help.
thanx.

  #8

santaclara u cant change signs given in the ques...
yeah u r right, if net pressure is -ve dat means reabsorption
and +ve means filtration

___________________
I hear and I forget. I see and I remember. I do and I understand.
--Confucius

  #9

ok thanx mash. :lol:







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