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First of all an action potential reaches the end of a motor neuron and the neurotransmitter acetylcholine is then released into the synapse. An action potential is initiated in the muscle cellSarcoplasmic...

During depolarisation, sodium ions move into the cell, resulting in the membrane potential rising from -70 millivolts (mV) to +40mV.During repolarisation, potassium ions move out of the cell, and the memb...

Organisms may be less well adapted to the changing climate. The organisms will be outcompete by other organisms and it will be harder to them to find food and shelter which are crucial to the organisms su...

NucleusMitochondriaGolgi ApparatusSmooth endoplasmic reticulum

· The myelin sheath means that action potentials can occur only at the gaps between the Schwann cells that make up the myelin sheath.· Effectively the action potential jumps from one node of Ranvier to th...