If a person is injected with a toxin that blocks acetylcholine receptors, which of the following will occur?
A. The toxin will have no effect on muscle action.
B. The sarcolemma will be constantly stimulated, and muscles will continually contract.
C. Spastic paralysis will result.
D. Stimulation of the sarcolemma will not be possible, and muscles will be paralyzed.
E. The person will develop myasthenia gravis.
Answer: D
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A) mast cells B) goblet cells C) fibroblasts D) macrophages
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