Which of the following is located within the cell body of a neuron?Multiple choice question.A node of RanvierA nucleusAn axon terminalA myelin sheath

1. Break Down the Problem

The question asks which structure is located within the cell body of a neuron. We will evaluate each of the provided options to identify the correct one.

2. Relevant Concepts

• Cell Body (Soma): The part of a neuron that contains the nucleus and organelles.
• Nucleus: The organelle that houses genetic material and is typically located within the cell body.
• Node of Ranvier: Gaps in the myelin sheath of an axon, not located in the cell body.
• Axon Terminal: The ends of axons where neurotransmitters are released, situated at the end of the neuron, not in the cell body.
• Myelin Sheath: A fatty layer that encases the axon, and it is not located within the cell body.

3. Analysis and Detail

• Option A: Node of Ranvier - Incorrect, as these are gaps on the axon.
• Option B: Nucleus - Correct, as the nucleus is found in the cell body.
• Option C: Axon Terminal - Incorrect; axon terminals are at the end of the axon.
• Option D: Myelin Sheath - Incorrect; it covers the axon.

4. Verify and Summarize

Only the nucleus is located within the cell body of a neuron. All other options do not belong to the cell body structure.

Final Answer

The correct answer is A nucleus.