Explain The Process Of Polarization Of Neuron
Polarization of the neuron’s membrane: cell membrane is surrounded by neurons as other cell has a membrane. If a nerve cell is not stimulated, the membrane is known to be polarized. For a neuron to be polarized, it is by maintaining excess of sodium ions on the outside of the cell and excess potassium ions on the inner part of the cell. A volume of sodium ions and potassium ions usually leaks through its channel but the sodium ions and potassium ions pumps on the membrane that restores the (k+) back inside and Na+ back outside.
Resting potential: once the neuron is no longer active, unstimulated, polarized it is known to be resting potential.
Action potential: At this stage, once a stimulus gets to a resting neuron, the stimulus causes sodium …show more content…
This will make the potential of membrane to reduce than the resting potential, this is known to be hyperpolarized because the membrane has established a genuine potential.
At this refractory period, potassium ions and sodium ions return to their normal potential locations, the sodium ions move back to outside and the potassium ions on the inside and the neuron is waiting to accept another stimulus.
Nerve impulses transmits across synapse, the point of contact between a nerve and other cells where impulses are moved without no contact is known as chemical synapse and the spaces between the cells is known as the synaptic cleft. Transmission of nerve impulses move across the gap through transformation of the action potentials into a chemical signal that goes across the cleft. The arrival of impulses at the synaptic terminal, calcium gated ion channels opens, the calcium ions goes into the cell. The nerve impulse is transmitted through the neurotransmitters to their point of synaptic fibre and the rise of calcium concentration makes presynaptic vesicles to join with the presynaptic membrane to release neurotransmitter. This neurotransmitter diffuses across the synaptic cleft, it joins to receptor proteins on the point of synaptic membrane. The post synaptic membrane is made up of enzymes that are no longer active to the neurotransmitter, acetylcholine
Resting potential: once the neuron is no longer active, unstimulated, polarized it is known to be resting potential.
Action potential: At this stage, once a stimulus gets to a resting neuron, the stimulus causes sodium …show more content…
This will make the potential of membrane to reduce than the resting potential, this is known to be hyperpolarized because the membrane has established a genuine potential.
At this refractory period, potassium ions and sodium ions return to their normal potential locations, the sodium ions move back to outside and the potassium ions on the inside and the neuron is waiting to accept another stimulus.
Nerve impulses transmits across synapse, the point of contact between a nerve and other cells where impulses are moved without no contact is known as chemical synapse and the spaces between the cells is known as the synaptic cleft. Transmission of nerve impulses move across the gap through transformation of the action potentials into a chemical signal that goes across the cleft. The arrival of impulses at the synaptic terminal, calcium gated ion channels opens, the calcium ions goes into the cell. The nerve impulse is transmitted through the neurotransmitters to their point of synaptic fibre and the rise of calcium concentration makes presynaptic vesicles to join with the presynaptic membrane to release neurotransmitter. This neurotransmitter diffuses across the synaptic cleft, it joins to receptor proteins on the point of synaptic membrane. The post synaptic membrane is made up of enzymes that are no longer active to the neurotransmitter, acetylcholine