Page 2 - Electrophysiology
- - April 23, 2013
EHB1 EHBF FOIMPH MBMPH5-7 MEH145 MEH1F45 MEH1R MEH1RF MEH1S MEH1SF MEH2R MEH2RF MEH2RFW MEH2RW MEH2S MEH2SF MEH2SFW MEH2SW MEH345 MEH3F45 MEH3FW45 MEH3R MEH3RF MEH3RFW MEH3RW MEH3S MEH3SBW MEH3SF MEH3SFW MEH3SW MEH3W45 MEH3W45 MEH6RFW MEH6SF MEH7 MEH7W MEH8 MEH900R MEH900S MPH1 MPH3 MPH4 MPH6P MPH6R MPH6S 2505
0.25" diameter (6.3mm)
SAE #8/32 thread x 4" (10cm)
For WPI and Märzhäuser manipulators5444
0.1875" diameter (4.8mm)
SAE #8/32 thread x 4" (10cm)
For Narishige and Zeisse manipulators - - April 23, 2013
Contributing Author: Dr. Steve Andre (Muscle Physiologist)
All living cells maintain a difference in electrical charge between the solutions that are inside and outside the cell membranes. The voltage difference across the cell membrane is usually at a steady level known as the resting membrane potential. The resting membrane potentialis produced by the differential distribution of ions on either side of the membrane. In muscle fibers, the potassium concentration inside the cell is over 50 times greater than the ion’s concentration in the extracellular fluid. On the other hand, the concentration of sodium is 10 times greater outside the membrane than inside. The concentration gradient of potassium is greater and in the opposite direction to the sodium concentration gradient. The ion concentrations are governed by three factors:
- Sodium-potassium pump
- Relative rates of diffusion of these ions down concentration gradients
- Attraction and repulsion of opposite and like charges
Sodium/Potassium...more
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