Net driving force in capillaries - USMLE Forums
USMLE Forums Logo
USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
USMLE Articles
Go Back   USMLE Forums > USMLE Step 1 Forum

USMLE Step 1 Forum USMLE Step 1 Discussion Forum: Let's talk about anything related to USMLE Step 1 exam

Thread Tools Search this Thread Display Modes
Old 03-17-2016
USMLE Forums Newbie
Steps History: ---
Posts: 2
Threads: 2
Thanked 0 Times in 0 Posts
Reputation: 10
Default Net driving force in capillaries


I don't understand how along the same capillary, the net driving force can change from positive (filtration) to negative (reabsorption) from one end to the other.
Because at some point while NDF decreases, it will reach zero and will be neither positive nor negative, so neither filtration nor reabsorption will occur at that specific point in time.
So from this situation, how can NDF continue to decrease and become negative, since filtration can't continue if NDF=0? What is the force that would maintain fluid leakage and make capillary hydrostatic pression continue to drop?

Thanks in advance for your help.
Reply With Quote Quick reply to this message


Quick Reply

Register Now

In order to be able to post messages on the USMLE Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Medical School
Choose "---" if you don't want to tell. AMG for US & Canadian medical schools. IMG for all other medical schools.
USMLE Steps History
What steps finished! Example: 1+CK+CS+3 = Passed Step 1, Step 2 CK, Step 2 CS, and Step 3.

Choose "---" if you don't want to tell.

Favorite USMLE Books
What USMLE books you really think are useful. Leave blank if you don't want to tell.
Where you live. Leave blank if you don't want to tell.


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
surfactant and capillary filtration force voidthis4 USMLE Step 1 Forum 2 05-21-2016 10:46 AM
Oxygen tension at pulmonary capillaries (Graph) bebix USMLE Step 1 Forum 30 06-28-2011 03:28 PM
nervous system increases the force of muscle contraction Seetal USMLE Step 1 Forum 4 04-16-2010 03:40 PM
Skeletal Force Transmission! Seetal USMLE Step 1 Forum 4 04-14-2010 04:10 AM

RSS Feed
Find Us on Facebook
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.

USMLE® & other trade marks belong to their respective owners, read full disclaimer
USMLE Forums created under Creative Commons 3.0 License. (2009-2014)