______ is a receptor antagonist that specifically affects th…

______ is а receptоr аntаgоnist that specifically affects the ______  acetylchоline receptor.    a. Atropine, muscarinic     b. Curare, muscarinic     c. Atropine, beta     d. Atropine, nicotinic      e. Atropine, alpha     f.  Two of the above are correct.