Channels

  • Robert Plonsey
  • Roger C. Barr

Abstract

In the previous chapter it was pointed out that biological cells are enclosed by a plasma membrane. This membrane consists of a lipid bilayer and, as seen in Fig. 3.1, the hydrophilic polar heads are oriented facing the intracellular and extracellular water-containing media while the hydrophobic tails, on the other hand, are internal to the membrane. The biophysical consequence of the lipid is a membrane with the high dielectric constant of oil and the high resistivity of that material. We have noted a membrane capacitance of C m = 1 μf/cm2; the lipid membrane specific resistance is 109 Ω cm2.

Keywords

Potassium Channel Open Channel Patch Clamp Closed Channel Excitable Membrane 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 2000

Authors and Affiliations

  • Robert Plonsey
    • 1
  • Roger C. Barr
    • 1
  1. 1.Edmund T. Pratt Jr., School of EngineeringDuke UniversityDurhamUSA

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