Study objectives

• Distinguish among depolarization, hyperpolarization, and repolar-ization

• Compare and contrast graded potentials and action potentials

• Describe the process of local current flow

• Explain the mechanism by which action potentials are generated

• Understand the function of sodium and potassium voltage-gated channels

• Distinguish between the absolute refractory period and the relative refractory period

• Describe the process of saltatory conduction

• Explain the functional significance of myelin

• Explain why conduction of the action potential is unidirectional

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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