The muscular layer in the wall of a hollow organ or tube, such as the stomach or blood-vessels.(noun)
The Century Dictionary (Public Domain)
Use "muscularis" in a sentence
"It is characterized by crypt abscesses and ulcerations extending down to the muscularis and surrounded by prominent mucosal infiltrate of inflammatory cells."
"Occasionally the current should be rapidly reversed by means of the commutator, the intensity however having been previously reduced, in order to avoid too severe a shock; this will cause efficient contractions of the abdominal _parietes_, and probably also of the intestinal _muscularis_."
"Atony of the _muscularis_ of the intestine is admittedly the direct cause, in most instances, of constipation."