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.
Now, inputs from certain types of stimuli may increase or decrease the membrane potential of the neuron a small amount, for a brief time, before it returns back to the resting potential. These transient membrane potential changes are called graded potentials, and they tend to occur in the dendrites of the neuron and in the soma of the neuron. And the size and the duration of the graded potentials is determined by the size and the duration of inputs-- both excitatory inputs and inhibitory inputs. Graded potentials do not pass into the axons of most types of neurons. Instead, most axons have a different membrane potential change, called an action potential.