MEDICAL PHYSIOLOGY

Detailed explanation-1: -Impulse enters a neuron through the dendrites. The information acquired at the end of the dendritic tip of a nerve cell sets off a chemical reaction that sends the impulse to the cell body where it is processed. From the cell body, the impulse moves into the axon and then to the axonal ends.

Detailed explanation-2: -Nerve impulses begin in a dendrite, move toward the cell body, and then move down the axon. A nerve impulse travels along the neuron in the form of electrical and chemical signals. The axon tip ends at a synapse.

Detailed explanation-3: -Nerve impulses only travel in one direction in neurons. This impulse transmission is dependent on synaptic transmission. This happens because nerve cells only have one transmission site. The receptors also work in one direction.

Detailed explanation-4: -Within a neuron, the impulse moves to the tip of an axon and causes the release of neurotransmitters, chemicals that act as messengers. Neurotransmitters pass through the synapse, the gap between two nerve cells, and attach to receptors on the receiving cell.

Detailed explanation-5: -Correct option: Explanation : Nerve impulses are always transmitted across a synapse from the axon terminals of one neuron to the dendrite / cell body of the next neuron but never in the reverse direction.