In a neuron, what is the primary function of dendrites?

• A. Conduct action potentials away from the cell body toward synaptic terminals
• B. Receive incoming signals from other neurons and carry them toward the cell body (soma)
• C. Produce myelin to insulate axons and increase conduction speed
• D. Release neurotransmitters into the synaptic cleft to stimulate the next cell

Answer: (B)

Verified step by step guidance

1. Understand the structure of a neuron, which includes dendrites, the cell body (soma), and the axon.
2. Recognize that dendrites are branched extensions from the cell body designed to receive signals.
3. Know that dendrites carry incoming electrical signals (graded potentials) toward the cell body, not away from it.
4. Differentiate dendrites from axons, which conduct action potentials away from the cell body toward synaptic terminals.
5. Recall that other functions like producing myelin or releasing neurotransmitters are performed by different parts of the neuron or supporting cells, not dendrites.