Structure and Function of Membrane Systems of Skeletal Muscle Cells

The sections in this article are: Structural Components of Skeletal Muscle Fibers Sarcomeres, Striations, and Fibrils Membranes Physiological Correlates Local Activation Experiments Comparison of Slow‐Acting and Fast‐Acting Muscle Fibers Relation of Total Surface Area to Fiber Capacitance Glycerol‐Shock Experiments Microscopic Methods in Study of Cellular Membrane Structure Scanning Electron Microscopy High‐Voltage Electron Microscopy of Thick Sections Freeze‐Fracture Electron Microscopy T System Definition, Development, and Function T‐Tubule Networks T‐Tubule Shapes Sarcoplasmic Reticulum Definition, Development, and Function Structural Relationship to Myofibrils and Striations Form of Sarcoplasmic Reticulum Content of Sarcoplasmic Reticulum Calcium Movements Intrinsic Membrane Proteins Sarcoplasmic Reticulum T Tubules Comparative Structure of Sarcoplasmic Reticulum and T System Fibers With One Small Dimension and No T System Fibers With Low Speed and Small Quantity of Membranes Fibers With High Speed and Large Quantity of Membranes Variation in Speed and Quantity of Membranes in Mammalian Fibers Invertebrate Fibers T‐System‐Sarcoplasmic Reticulum Couplings Basic Form Structural Details Role of T‐Tubular Calcium Current in Excitation‐ Contraction Coupling Functional Mechanism of Coupling Between T Tubules and Sarcoplasmic Reticulum Special Geometry of T System Longitudinal T Tubules Helicoids Structural and Functional Implications