Which of the following is the receiving nerve end of all transmission?

The receiving nerve end of all transmission is the dendrite. Dendrites are specialized extensions of a neuron that receive neurotransmitter signals from other neurons or sensory receptors. They play a crucial role in the process of neuronal communication by capturing chemical signals and converting them into electrical impulses that can be transmitted along the neuron.

Once a neurotransmitter binds to the receptors on the surface of the dendrite, it results in depolarization of the membrane, which can initiate a nerve impulse if the signal is strong enough. This is essential for the relay and processing of information within the nervous system.

The other components mentioned, such as the cell body, axon, and trigger zone, serve different functions in the neuron. The cell body primarily contains the nucleus and organelles essential for the neuron's metabolic activities. The axon is responsible for transmitting the nerve impulse away from the cell body to other neurons or effectors. The trigger zone is the area where the action potential is initiated, generally found at the junction of the axon and cell body. Each part works together for the overall function of transmitting signals, but it is the dendrite that specifically serves as the receiving end.