Which statement is FALSE about the motor neuron to muscle activation sequence? Group of answer choices Glutamate binds to glutamate receptors on the cell body of the lower motor neuron. Acetylcholinesterase clears the neuromuscular junction of acetylcholine for normal muscle function. The activation sequence can only occur in one direction. Once initiated, an action potential is propagated the entire distance from the upper motor neuron to the muscle cell. Acetylcholine binding to nicotinic acetylcholine receptors allows sodium to come into the skeletal muscle cell and initiate an action potential.