A neuron is a _______.

• A. Nerve cell
• B. Muscle cell
• C. Epithelial cell
• D. Glial cell

Answer: (A)

A neuron is a nerve cell. Neurons are the specialized signaling units of the nervous system, designed to receive, process, and transmit electrical and chemical signals. They have distinct parts: a cell body (soma), dendrites that receive input, and an axon that sends output to other neurons, muscles, or glands through synapses. In histology, the term “nerve cell” is essentially interchangeable with neuron.

This helps differentiate it from the other options: muscle cells are built for contraction, epithelial cells line and protect surfaces, and glial cells provide support, nutrition, and insulation to neurons but are not themselves the primary signaling cells.