What is the mechanism of a conduction of an action potential across a synapse?

Answer 1

Exocytosis occurs releasing neurotransmitters into the synapse. They diffuse across the synapse to receptor sites on ligand-gated sodium ion pores on the post-synaptic neuron, causing those pores to open, allowing sodium ions into the receiving neuron.

Those sodium ions cause an electrotonic signal to travel down the dendrite and soma to the axon hillock; these signals are considered to be a graded response, in that they may be more or less strong.

If the strength (level of voltage) at the axon hillock is sufficient, it will trigger voltage-gated sodium pores to open in the initial segment of the axon, which will allow more sodium ions into the axon at that point, causing v-gated ion pores a small distance away to open, letting more sodium ions in, opening more v-gated ion pores yet further awy to open, etc,; this process is known as an action potential.

(The neurotransmitters in the initial receptor sites has to be removed to close the ligand-gated sodium ion pores at the beginning of this process so that the neuron does not just fire continuously.)

Answer 2

As a nerve impulse propagates along its axon it reaches the synapse and stimulates calcium ion gates to flow into its end bulb, this stimulates vesicles inside the bulb holding a particular neurotransmitter (commonly acetylcholine in humans) to exocytose out into the synaptic cleft (a small junction between the synapse end bulb and the receiving neuron/muscle cell, etc). After the neurotransmitter is released it migrates across to synaptic cleft and attaches to proteins attached to the membrane wall to stimulate a particular response. It can be an excitatory or inhibitory response to either stimulate another action potential or inhibit it. Normally to propagate the action potential, a series of excitatory channels would open allowing an influx of sodium ions into the cell creating a positive membrane potential changing the resting potential (~-70mv) to become more positive. If the number of excitatory signals elevates the potential to -35mv then an all out response in the cell will occur resulting in an action potential that can propagate along the new cell

Answer 3

The mechanism of conduction of an action potential across a synapse is the transfer and vibration of cells. This can exchange heat as well, which induces kinetic energy.

Answer 4

it goes though the dick and boobs

Answer 5

by neurotransmitters

Answer 6

neuro pathways/recepters