Which part of a neuron primarily sends messages away from the cell body to other neurons or effectors?

• A. Myelin sheath
• B. Axon
• C. Cell body (soma)
• D. Dendrites

Answer: (B)

Verified step by step guidance

1. Understand the basic structure of a neuron, which includes the cell body (soma), dendrites, axon, and sometimes a myelin sheath surrounding the axon.
2. Recall the function of dendrites: they primarily receive incoming signals from other neurons and transmit these signals toward the cell body.
3. Recognize that the cell body (soma) integrates incoming signals and contains the nucleus and organelles necessary for cell function.
4. Identify the axon as the long, slender projection that transmits electrical impulses away from the cell body toward other neurons or effector cells (such as muscles or glands).
5. Note that the myelin sheath is a fatty layer that insulates the axon to speed up signal transmission but does not itself send messages.