Ryanodine is a drug that crosses a cell membrane and opens calcium channels in the sarcoplasmic reticulum. Imagine that

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Ryanodine is a drug that crosses a cell membrane and openscalcium channels in the sarcoplasmic reticulum. Imagine thatyou treated a skeletal muscle fiber simultaneously withtubocurarine and ryanodine (recall that tubocurarine preventsnicotinic acetylcholine receptors from opening). The skeletalmuscle fiber would
a.
Relax completely
b.
Contract only when treated with very high levels ofacetylcholine
c.
Enter tetany