Worksheet: Journey along the Nephron



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Developed by Dr. Gregory J. Crowther – permission to reuse/adapt with attribution is granted

Worksheet: Journey along the Nephron
Goal:

  • Reinforce our understanding of how various substances may be filtered, secreted, and/or reabsorbed by drawing graphs of substance levels at various sections along a nephron.


A. Background anatomy and terminology


1. Label the diagram at right (from catalog.niddk.nih.gov) with the following terms:
* Bowman’s capsule (glomerular capsule)

* collecting duct

* distal tubule

* glomerulus

* loop of Henle (nephron loop)

* proximal tubule



* renal corpuscle



2. Three main processes govern the formation of urine. (A short song about them, “Pee Values,” is here: http://faculty.washington.edu/crowther/Misc/Songs/pee.shtml.) Briefly define each process below.


FILTRATION =
SECRETION =
REABSORPTION =

B. Nephron graphs
For any substance that is present in the blood, we can make a graph of the amount of it passing through any given section of a nephron as shown below.




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