Innervation of trigonal area of canine urinary bladder

Adrenergic and cholinergic histochemical staining techniques and in vitro muscle strip responses to adrenergic and cholinergic stimulation and blockade have failed to demonstrate any neuromorphologic or neuropharmacologic differences between the musculature of the canine trigone and that of the underlying detrusor. There is no evidence to suggest that a functional potential could be attributed to the trigone separate from that of the related bladder base.