If symptoms of exocrine pancreatic insufficiency are apparent, a number of pancreatic function tests can be done. A serum sample that measures the amount of the chemical trypsinogen (TLI) released into the blood from the pancreas should reveal problems in the pancreas. A dog with EPI will have reduced amounts of TLI.
Neuron Resting Potential-Resting Membrane Potential of the neuron. The voltage difference between the intracellular space and the extracellular space when a neuron is in its non-activated state, is the cells resting potential, which is around -- 70 mV. The resting potential is the electrical charge the cell has when it is resting and when it is not stimulated by any open ion channels.
A change in the resting potential can affect its permeability. This is called a stimulus. if this stimulus causes a decrease from the resting potential of -70 millivolts in the direction of 0, the membrane is said to be depolarized. This creates an action potential. The action potential is an all or none event. A neuron has a threshold potential -50 millivolts, this must be attained before the sodium gates open and allow the sodium to pour into the cell.