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Table 1 Surface area of various plasma membranes in the cell

From: Modeling CICR in rat ventricular myocytes: voltage clamp studies

Variable Description Value
A Ext.SL Surface area of external SL 11.4 × 103 μm2
A TT Surface area of T-tubule 5.52 × 103 μm2
A TotSL Surface area of total SL (including external SL and T-tubule) 16.9 × 103 μm2 (*)
A JunctExt.SL Surface area of junctional external SL 0.846 × 103 μm2
A JunctTT Surface area of junctional T-tubule 2.54 × 103 μm2
A TotJunct Surface area of total junctional plasma membrane 3.39 × 103 μm2
A JunctSR Surface area of junctional SR 6.99 × 103 μm2
A LongSR Surface area of longitudinal SR 36.8 × 103 μm2
A TotSR Surface area of total SR 43.8 × 103 μm2
  1. *Electrical capacitance of the cell membrane = 169 pF (using 1 μ F/cm2)
  2. Table 1: Surface area of various plasma membranes in the cell. All the above parameters are derived from Bers [16].