QUESTION Where does a voluntary contraction begin? In the anterior horn of the spinal cord In the posterior horn of the

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QUESTION Where does a voluntary contraction begin? In the anterior horn of the spinal cord In the posterior horn of the spinal cord At the motor end plate In the brain
QUESTION Which of the following events initiates actin-myosin cross- bridge activity? The release of calcium A lack of action potentials A lack of transverse tubules No receptors bound with acetylcholine
QUESTION What is a motor end plate? A region in the spinal cord where alpha motor neurons are located A region in the spinal cord where alpha motor neurons are absent. A region where a motor neuron establishes synaptic contact with a muscle fiber A region in the primary motor cortex