The long slender projection of a nerve cell that conducts electrical impulses away from the cell body is the?

The long slender projection of a nerve cell that conducts electrical impulses away from the cell body is called the axon. The primary function of the axon is to transmit information in the form of action potentials, which are electrical impulses, to other neurons, muscles, or glands. Axons can vary widely in length and diameter, and they often have myelin sheaths that facilitate faster conduction of impulses.

In contrast, dendrites are the structures that receive signals from other neurons and carry those signals toward the cell body. Neurons refer to the entire nerve cells, including the cell body, axon, and dendrites, rather than a specific structure for conducting impulses. A synapse is the junction between two neurons where communication occurs, but it does not conduct impulses on its own. Thus, the axon is specifically responsible for the outgoing conduction of impulses, making it the correct answer.