Nerve conduction

Definition

Nerve conduction is the process by which electrical impulses travel along a nerve fiber. This involves the movement of ions across nerve cell membranes, creating action potentials.

5 Must Know Facts For Your Next Test

1. Nerve conduction relies on the movement of sodium (Na\(^+\)) and potassium (K\(^+\)) ions across the nerve cell membrane.
2. The speed of nerve conduction is influenced by factors such as myelination and axon diameter.
3. Ohm's Law ($V = IR$) can be applied to understand the electrical properties of nerve fibers.
4. Action potentials are all-or-nothing events that propagate without decreasing in amplitude.
5. Electrocardiograms (ECGs) measure the electrical activity of the heart, which is also based on principles of nerve conduction.

Review Questions

Related terms

Action Potential:

A rapid rise and fall in voltage or membrane potential across a cellular membrane as a result of ion movements.

Myelination: The process by which glial cells wrap around axons to form a myelin sheath, increasing the speed of electrical impulse propagation.

Electrocardiogram (ECG): A test that measures the electrical activity of the heart using electrodes placed on the skin.