[The comparative sensitivity of isolated arteries and atrium from the cat to m-cholinoreceptor agonists].

A comparative assessment of the activities of some agonists of M-cholinoreceptors was made on the isolated mesatone-treated segments of arteries of various localization and the isolated left atrium of the cat. It was found that by the sensitivity to cholinomimetics the cat arteries may be divided in 2 groups: high- and low-sensitive (the latter include the aorta and renal artery). The left cat atrium is less sensitive to the agonists than the high-sensitive arteries and possesses approximately the same sensitivity to M-cholinomimetics as the aorta and renal artery.