Neurotransmitters are released at the A Dendrite  B axon terminal C cell body  D myelin sheath

Understanding the Question

The question asks where neurotransmitters are released in a neuron during synaptic transmission.

Detailed Analysis

1. Dendrite: Dendrites are the branched extensions of a neuron that receive chemical signals from other neurons. They do not release neurotransmitters.

2. Axon Terminal: The axon terminal is the end part of a neuron where neurotransmitters are released into the synaptic cleft to communicate with adjacent neurons.

3. Cell Body: The cell body contains the nucleus and organelles but does not release neurotransmitters directly.

4. Myelin Sheath: The myelin sheath is an insulating layer that surrounds the axon, facilitating faster transmission of electrical signals. It does not participate in the release of neurotransmitters.

Conclusion

The correct answer is B: axon terminal. Neurotransmitters are released at the axon terminals during the process of synaptic transmission, allowing for communication between neurons.