Differences and similarities in the noradrenaline- and caffeine-induced mechanical responses in the rabbit mesenteric artery.


1. The properties of noradrenaline (NA)-induced and caffeine-induced contractions in the rabbit mesenteric artery were investigated and compared, using intact and skinned muscles.2. NA (> 10(-7) M) depolarized the membrane and reduced the membrane resistance. Increased concentrations of NA (> 10(-5) M) rarely produced oscillatory potential changes yet… (More)


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