medmanparadise
Forum Newbie
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Of the following structures, which does not respond to B-adrenergic receptor stimulation?
a. Ciliary muscle of the iris
b. Radil muscle of the iris
c. Bronchial muscle
d. Atrioventricular node
e. Sinoatrial node
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| study_ing
Forum Fanatic
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A
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| drpkaur
Forum Guru
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I think it's radial(dilator)muscle of iris which has alpha 1 receptor activation..
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| medmanparadise
Forum Newbie
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I know that the radial muscle predominantly a-adrenergic: thus making the answer B. The part of the summary that thru me for a loop was that is says that the ciliary muscle of the iris has b-receptors causing relaxation. Can anyone confirm this somewhere?
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