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Physiology I
Neuromuscular Junction - Test 3
Question | Answer |
---|---|
True or false, the neuromuscular juncion is a speicalized elecrtical synapse? | False, it is a specialized chemical synapse comprised of an Alpha motor neuron and the muscle fiber it innervates |
True or False, a synapse will always respond to an action potential? | False, a synapse may or amy not respond whereas a junction will always respond to an action potential. |
Where ar the cell bodies of Alpha Motor Neurons located? | In the spinal cord or brain stem |
True or false, usually each muscle fiber has only one neuromuscular junction? | True |
Where does the junction of nerve endings meet on the muscle fiber? | midpoint to allow the action potential to travel in each direction |
What is a motor unit consist of? | A single motor neuron and all the muscle fibers it innervates |
True or false, a single muscle fiber is controlled by a single motor unit? | True |
Where is the active zone of the axon terminal located? | Over the subneural folds |