Image Based Question – 73799


A guinea pig is dissected and a portion of its intestine is fixed in the modified Dales chamber to study the effects of some drugs on intestinal contractility. A substance X was infused in the broth following which the graph comes out as depicted. Substance X most closely resembles which of these substances?

A. Epinephrine

B. Acetylcholine

C. KC1

D. BaCl2


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