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Falcon USMLE


Author13 Posts
  #1

Under control conditions flow through a blood vessel is 100ml/minute under a pressure gradient of 100mm Hg. The diameter of the vessel is increased two fold and the pressure gradient is maintained at 100mm Hg. Which of the following is the current flow in ml/minute.

a) 100

b) 200

c) 400

d) 800

e) 1600



  #2

1600, q=p1-p2/R


  #3

sorry guys these are NBME questions . iam extremely sorryyyyyyyyyy &thanks for your answers.


  #4

u better mention it, in the topic if its an NBME question!

no body wants their assessment to be biased!



___________________
life is guud

  #5

hi actually i have no idea regarding this & iam not going to repeat ok cheer up guys . dont get upset.


  #6

vemi007, iam sure you are sorry abt this mistake. you can partially rectify it by editing the 'subject' of all your posts(to NBME) in wch u hv put up NBME Qs.


  #7

hi geroo as you suggested i have updated and partially rectified my mistake .sorry for what had happened.sad



  #8




  #9

answer is A A A the flow through the blood vessels is constant in all the length bcause it is in series , so the flow in series is constant and even if decrease or increase Resistance with change in BP will keep the flow constant. so it is A 100ml/min.nodnod


  #10

abdalla is right


  #11

the right answered is b
as we know Q= map*r/vl
so as increase resistance by twice it will incrase Q same twice if map is constant


  #12

no its E.

its a simple concept. Flow (Q) = pi * r^4 where r=radius

Q=pi*r^4 so if you double the radius, you are increasing the flow 16-fold (2^4=16)

Don't over think it.



  #13

the answer is E. they have not said anything about series or parallel. and no mention of MAP either










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