In a neuron, terminal buttons (synaptic boutons) are located on which structure?

• A. Axon hillock
• B. Axon terminals (the distal end branches of the 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 hillock, axon, and axon terminals.
2. Recall that terminal buttons, also known as synaptic boutons, are specialized structures involved in transmitting signals to other neurons or effector cells.
3. Identify that terminal buttons are located at the distal ends of the axon, where the neuron communicates with the next cell via synapses.
4. Recognize that the axon hillock is the region where the axon originates from the cell body and is important for initiating action potentials, but it does not contain terminal buttons.
5. Conclude that terminal buttons are found on the axon terminals, which are the branched endings of the axon, responsible for releasing neurotransmitters.