Does information enter a neuron through the axon?

Answer 1

The different ion concentrations on the inside and outside of the cell membrane create a certain electric potential around the cell (just by being there with their charge).

A strong enough change in the concentrations can cause certain ion channel proteins in the membrane to open all at once, allowing certain ions to massively diffuse through the membrane and thereby rapidly changing the potential.

When a certain potential is reached, these channels will begin to close again and different potential-controlled channels will open, allowing a different kind of ions to move through the membrane and returning the membrane potential back to the previous state.

Again through diffusion the now changed ion concentrations will trigger these so-called action potentials in nearby membrane regions, carrying the stimulation along the neuron's axon to the next neuron.

Answer 2

Neurons pass information by neurotransmitters, chemicals that activate receiving neurons. These molecules (neurotransmitters) pass through what is called the synapse: a junction of an axon of the first neuron close to the dendrite of a second neuron. When the neurotransmitters act on the receiving neuron, they can activate a series of changes that cause than neuron to signal to another neuron, resulting in a chain reaction.

Answer 3

After the message gets to the axon terminal, it needs to cross the synapse. To cross it, the message converts to neurotransmitters. Then they cross the gap between the 2 neurons which is called the synapse. On the dendrites there are receptors , and the neurotransmitters go with their designated receptor.

Answer 4

the dendrites get the information and send it down the axon to the axon terminals

Answer 5

Generally, no. The postsynaptic areas on the dendrites of a neuron are where many signals enter the neuron.