Answers are grounded in this paper and cite their sources.
The responses to cholinergic and adrenergic drugs in human muscle strips from stomach and pylorus have been studied in vitro. Acetylcholine and carbacholine induced contractions in all preparations tested. The responses were blocked by atropine. The response to adrenaline and noradrenaline elicited contractions in some preparations; in others biphasic responses or inhibition was obtained. Reversal of the response was also produced in some preparations by increasing the dose. The studies indicate excitatory adrenergic α-receptors in addition to inhibitory α- and β-receptors.
No takes yet. Share an insight, caveat, or question.
Haffner et al. (1969) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: