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Myoneural Junction 1. The chemical that crosses a neuromuscular gap is _____. a. sodium b. a protein c. a neurotransmitter d. calcium 2. The gap between the muscle and a nerve is the _____. a. synapse b. motor end plate c. myoneural junction d. motor neuron 3. The main neurotransmitter involved in skeletal muscle contraction is _____. a. adrenalin b. noradrenalin c. acetylcholine d. dopamine 4. The part of a nerve cell which is adjacent to the neuromuscular junction is the: a. dendrite b. axon c. medulla d. motor end plate e. receptor 5. Motor units: a. Are found only in cardiac muscle b. Are largest in muscles responsible for delicate movements c. Consist of a muscle fiber and all the nerves that supply it d. Consist of a motor neuron and all the muscle fibers it supplies e. Are the same as neuromuscular junctions
