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Ions and electrical charges, such as the potassium and sodium pump allow for the movement of messages along a neuron and that specific neuron (in this case motor) alerts the muscle to move.
Galvani\'s experimet tells us that nerves carry messages to the muscle through electrical impulses.
muscle nerves carry messages from the brain to tell the muscle to contract.
Nerves relay messages by transmitting an electrical impulse.
Electrical tests of muscle and a muscle biopsy show characteristic changes.
Well not messages but electrical impluses which the brain can interpret.
electrical impulses
Nerve!
Nerve cells. They are really more chemical than electrical, however.
Synapses let the "message" travel to muscle cells.
Neurons send electric impulses to your cells via the dendrites. The Axons carry the electrical impulses away from the cell. This process sends out signals to your brain for all of your body processes such as muscle movement.
The axon carries the action potential from the neuronal cell body to the effector (muscle or gland).