muscular layer of renal pelvis
Definition: middle layer (between outer adventitia and inner mucosa) composed of two morphologically and histochemically distinct types of smooth (involuntary) muscle fibers, one of which is identical and continuous with that of the ureters, whereas the other is unique to the calices and pelvis.
Synonym(s): tunica muscularis pelvis renalisTA
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Examples: glitazone, GI cocktail, etc.