End-Plate Potentials: How Nerve Impulses Drive Movement
End-Plate Potential (EPP) The Core Definition of End-Plate Potential The End-Plate Potential (EPP) is fundamentally defined as the transient, depolarizing change in the membrane potential of a muscle fiber at the site of the neuromuscular junction (NMJ). This specific depolarization is induced solely by the arrival of an action potential at the presynaptic motor neuron […]
EXCITATION
Introduction to Neural and Muscular Excitation The concept of excitation forms the fundamental basis of communication within the nervous system and the initiation of movement in the muscular system. Broadly defined, excitation refers to an increase in the responsiveness or activity level of a cell, tissue, or organism, typically elicited following adequate stimulation. In cellular […]