Anatomy and Physiology (ANAPHY) Battery Practice Exam – Prep Guide & Practice Test

The axon is the part of a neuron that transmits impulses away from the cell body. This cylindrical structure serves as a long projection that carries electrical signals, known as action potentials, to other neurons, muscles, or glands. The axon is essential for communication within the nervous system, as it effectively propagates the signal over distances, allowing for coordinated actions across various parts of the body.

In contrast, dendrites are shorter, branching structures that receive incoming signals from other neurons and convey them toward the cell body. The soma, or cell body, contains the nucleus and organelles but does not play a direct role in transmitting impulses. The synapse is the junction where communication occurs between two neurons, but it is not a structural component of the neuron that conducts impulses. Each of these structures has a crucial function, but it is the axon that specifically facilitates the movement of electrical impulses away from the neuron's cell body.