Unit Three: (Suspended part) Chapter 9 - Document 3: Nerve impulse and action potential

In this lesson, students will explore the concepts of nerve impulses and action potentials, which are the electrical signals that allow the nervous system to transmit information. They will learn about the mechanisms of action potential generation, propagation, and transmission, including the roles of ion channels, sodium and potassium ions, and the refractory period. Students will also discuss the importance of nerve impulses and action potentials in controlling various bodily functions.