What are the main parts of a neuron?

• A. Dendrites, soma (cell body), and axon.
• B. Nucleus, mitochondria, and ribosomes.
• C. Dendrites, axon terminals, and synapses.
• D. Glia, neurotransmitters, and membranes.

Answer: (A)

The main idea here is how a neuron is structurally organized to pass signals. The best answer lists dendrites, soma (cell body), and axon. Dendrites receive incoming signals from other neurons, the soma integrates these inputs and houses the nucleus and essential organelles, and the axon carries the electrical signal away toward other neurons or effectors. The other options point to subcellular components (like the nucleus, mitochondria, and ribosomes) or to elements involved in connections and signaling (axon terminals, synapses, glia, neurotransmitters), which aren’t the primary structural divisions of a neuron. Understanding these three parts helps explain how information flows through the neuron in the nervous system.