Calcium Homeostasis: Calcium Homeostasis in Skeletal Muscle; E. Ríos. Calcium Ion Fluxes across Plasma Membranes; G. Vassort. Presynaptic Nerve Function: Biochemical Aspects of Presynaptic Function; F. Valtorta, et al. Biophysical Aspects of Presynaptic Activity; R. Fesce. Nervous Control of Muscle Function: Low Molecular Weight Neurotransmitters; M.Z. Wrona, G. Dryhurst. The Electrochemical Signal Transmission by the Acetylcholine Receptor: Single Channel Conductance Events and Oligochannels; E. Neumann, T. Schürholz. Nervous Control of Cardia Function: Modulation of Pacemaker Activity; D. Di Francesco. Excitation-Contraction Coupling: Excitation-Contraction Coupling in Skeletal Muscle; E. Ríos, et al. Muscle Contraction: Contractile Protein Isoforms in Sarcomeric Muscle: Distribution, Function and Control of Gene Expression; S. Schiaffino, P. Moretti. Thermodynamics of Irreversible Processes: Thermodynamics of Irreversible Processes Applied to Biological Systems: A General Survey; D. Walz. 7 additional articles. Index.