In this electrifying episode of Physiology Roundtable, we explore how cells generate, maintain, and propagate electrical signals — the basis for everything from heartbeat to brain function. Join us as we demystify membrane potentials, action potentials, and the exquisite timing that allows neurons and muscles to function in perfect synchrony. 🎯 Learning Objectives: By the end of this episode, listeners will be able to: Define resting membrane potential and describe how it is established and maintained. Describe the phases and ionic basis of an action potential. Understand how action potentials propagate along axons, including saltatory conduction. Recognize how electrophysiological principles apply to neural signaling, cardiac function, and muscle activation.