neurotransmitters

Neurotransmitters use an electrochemical process to send messages throughout the body. When neurons are not sending a signal they are said to be at rest. When at rest, the inside of the neuron is negatively charged while the outside is positively charged. Though they attempt to balance out, they cannot because only certain ions are allowed to pass through the cell membrane. At rest, potassium ions are allowed to cross through easily, while chloride and sodium ions have a more difficult time crossing. At rest there are more sodium ions outside the neuron and more potassium ions inside the ions, causing the ratio of positive to negative ions inside and outside the cell.
While the resting potential indicates what is happening within the neuron at rest the action potent...