61)How would the loss of acetylcholinesterase from the motor end plate affect skeletal muscle?61)A)It would produce muscle weakness.B)It would cause muscles to stay relaxed.C)It would have little effect on skeletal muscles.D)It would make the muscles less excitable.E)It would cause muscles to stay contracted.62)When acetylcholine binds to receptors at the motor end plate, the sarcolemma becomes62)9
63)The cytoplasm of the neuromuscular terminal contains vesicles filled with molecules of theneurotransmitter63)64)At what point during excitation contraction coupling does exocytosis play a role?64)65)Which of the following statements about excitation-contraction coupling isincorrect?65)A)Troponin binds calcium ion and signals tropomyosin to move.B)Relaxation requires uptake of calcium ion by the sarcoplasmic reticulum.C)Tropomyosin moves to expose myosin binding sites on actin.D)Calcium ions travel through the transverse tubule.E)Calcium ion is released from the sarcoplasmic reticulum.66)Synaptic vesicles contain neurotransmitters that are released by ________ when the action potentialarrives.66)67)The muscle weakness of myasthenia gravis results from67)68)A patient takes a medication that blocks ACh receptors of skeletal muscle fibers. What is this drug'seffect on skeletal muscle contraction?68)
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