A circular muscle layer of muscular coat that is part of a small intestine smooth muscle.
Synonyms:
exact_synonym:
circular layer of small intestine muscularis propria; circular muscle coat of small intestine; circular muscle layer of small intestine; circular muscle of small intestine; short pitch helicoidal muscle layer of small intestine; stratum circulare (tunica muscularis)(intestinum tenue); stratum circulare tunicae muscularis intestini tenuis; stratum helicoidale brevis gradus tunicae muscularis intestini tenuis