Which part conducts impulses away from the cell body?

Which part conducts impulses away from the cell body?

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

Answer: (B)

The main idea is how neurons send signals away from their cell bodies. Dendrites pick up messages and bring them toward the cell body, where signals are processed. The axon, on the other hand, is the long fiber that carries those impulses away from the cell body toward other neurons, muscles, or glands. Along the way the axon may be insulated by a myelin sheath to speed up conduction, with gaps called nodes of Ranvier that enable faster, saltatory transmission. At the end of the axon, the signal reaches the synapse and is passed to the next cell through neurotransmitters. Neuroglia are supportive cells and don’t transmit impulses.

The main idea is how neurons send signals away from their cell bodies. Dendrites pick up messages and bring them toward the cell body, where signals are processed. The axon, on the other hand, is the long fiber that carries those impulses away from the cell body toward other neurons, muscles, or glands. Along the way the axon may be insulated by a myelin sheath to speed up conduction, with gaps called nodes of Ranvier that enable faster, saltatory transmission. At the end of the axon, the signal reaches the synapse and is passed to the next cell through neurotransmitters. Neuroglia are supportive cells and don’t transmit impulses.