Formation of Glomerular Ultrafiltrate

  • Esmail Koushanpour
  • Wilhelm Kriz


The first step in urine formation begins with a passive process of ultrafiltration at the glomerulus. The term “ultrafiltration” refers to the passage of protein-free fluid from the glomerular capillaries into Bowman’s space. We begin this chapter with a description of the structure of the glomerulus followed by a detailed analysis of the passive forces governing the process of glomerular ultrafiltration, including the functional characteristics of the filtration barrier and the composition of the ultrafiltrate.


Glomerular Basement Membrane Renal Plasma Flow Afferent Arteriole Colloid Osmotic Pressure Glomerular Capillary 
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Copyright information

© Springer Science+Business Media New York 1986

Authors and Affiliations

  • Esmail Koushanpour
    • 1
  • Wilhelm Kriz
    • 2
  1. 1.Northwestern University Medical SchoolChicagoUSA
  2. 2.University of HeidelbergHeidelbergFederal Republic of Germany

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