Which of the following is the most likely path of an electrical signal travelling through a neuron and arriving at a muscle?

• A. Neuroglia → dendrites → a cell body → axon → muscle.
• B. Dendrites → cell body → axon → muscle.
• C. Dendrites → axon → cell body → muscle.
• D. Axon → cell body → dendrites → muscle.

Answer: (B)

Verified step by step guidance

1. Understand the structure of a neuron: Neurons have dendrites, a cell body (soma), and an axon. Dendrites receive signals, the cell body processes them, and the axon transmits them.
2. Identify the starting point of the signal: Electrical signals typically begin at the dendrites, which receive input from other neurons or sensory stimuli.
3. Trace the path through the neuron: After the dendrites, the signal moves to the cell body, where it is integrated and processed.
4. Follow the signal to the axon: The processed signal is then transmitted down the axon, which is responsible for carrying the signal away from the cell body.
5. Determine the endpoint: The axon ends at the synapse, where the signal is transferred to the muscle, causing contraction. Therefore, the correct path is dendrites → cell body → axon → muscle.