Lecture 17 - Renal Physiology (cont.)

author: W. Mark Saltzman, Department of Biomedical Engineering, School of Engineering and Applied Science, Yale University
recorded by: Yale University
published: Jan. 4, 2011,   recorded: March 2008,   views: 3137
released under terms of: Creative Commons Attribution No Derivatives (CC-BY-ND)
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Description

Professor Saltzman continues his description of nephron anatomy, and the specific role of each part of the nephron in establishing concentration gradients to help in secretion and reabsorption of water, ions, nutrients and wastes. A number of molecular transport processes that produces urine from the initial ultra-filtrate, such as passive diffusion by concentration difference, osmosis, and active transport with sodium-potassium ATPase, are listed. Next, Professor Saltzman describes a method to measure glomerular filtration rate (GFR) using tracer molecule, inulin. He then talks about regulation of sodium, an important ion for cell signaling in the body, as an example to demonstrate the different ways in which nephrons maintain homeostasis.

Reading assignment:

Biomedical Engineering: Bridging Medicine and Technology, in preparation by Mark Saltzman (forthcoming by Cambridge University Press); chapter 9

Resources:

Summary and Key Concepts: Chapter 9 [PDF]
Problem Set 8 [PDF]

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