Which part of a neuron contains a large nucleus, nucleolus, and organelles?

Which part of a neuron contains a large nucleus, nucleolus, and organelles?

• A. Dendrite
• B. Cell body
• C. Axon
• D. Neuroglia

Answer: (B)

The cell body is the metabolic center of the neuron. It houses the large nucleus and nucleolus, which store genetic information and synthesize ribosomal RNA, and it contains most of the organelles the cell needs to function—mitochondria for energy, rough endoplasmic reticulum with ribosomes for protein synthesis, the Golgi apparatus for processing proteins, and other components. This is where essential activities like maintaining cellular health, producing neurotransmitters, and supporting membrane maintenance happen. Dendrites and the axon are extensions that transmit signals; they contain cytoplasm but do not carry the nucleus or the full complement of organelles. Neuroglia are supporting cells, not part of the neuron itself.

The cell body is the metabolic center of the neuron. It houses the large nucleus and nucleolus, which store genetic information and synthesize ribosomal RNA, and it contains most of the organelles the cell needs to function—mitochondria for energy, rough endoplasmic reticulum with ribosomes for protein synthesis, the Golgi apparatus for processing proteins, and other components. This is where essential activities like maintaining cellular health, producing neurotransmitters, and supporting membrane maintenance happen. Dendrites and the axon are extensions that transmit signals; they contain cytoplasm but do not carry the nucleus or the full complement of organelles. Neuroglia are supporting cells, not part of the neuron itself.