perfusates obtained during stimulation ( 30 hz for 60 s ) of the periarterial nerves contained noradrenaline in a concentration of 1.6 +/- 0.3 ng/g wet wt . tissue per stimulus train , but almost no adrenaline ( n = 7 ) .4 neither stimulation of remak 's nerve nor the periarterial nerves liberated catecholamines when the rectum was perfused with tyrode solution containing low ca ( 2+ ) ( 0.1 mm ) and high mg ( 2+ ) ( 10 mm ) .5 infusion of high potassium solution ( 50 mm ) increased markedly the output of noradrenaline and adrenaline.6 adrenaline as well as noradrenaline may function as the adrenergic neurotransmitter in the rectum of the fowl .
C0007412
catecholamines
C0028351
noradrenaline