Des Moines Memorial Drive. âIn years to come, when the young men of today are the old men of tomorrow those elms will have come into their full strength and beauty, an ever present reminder of the days when the Americans of the World War marched on French highways.â â Lt. Gov. W. J. âWeeâ Coyle, at the dedication ceremonies, 1922.
Stages of Neural Impulses. Resting potential is the name for the electrical state when a neuron is not actively being signaled. A neuron at resting potential has a membrane with established amounts of sodium (Na+) and potassium (K+) ions on either side, leaving the inside of the neuron negatively charged relative to the outside. The action potential is a rapid change in polarity that moves along the nerve fiber from neuron to neuron.
â¢ a wave of electricity that travels down the axon of neuron â¢ from the cell body to the axon terminals This wave of electricity is actually a brief change in the resting membrane potential of the neuron â¢ from -70mv to +35mv Then the membrane returns to its resting potential of -70mv. Briefly opening more membrane gates for Na+ and then for K+ â¢ Thus making the neuron cell membrane o More permeable first to Na+ o Then to K+ â¢ This causes a change in the numbers of plus charges inside and outside the cell membrane o Changing the cell membrane potential.