- sphincteral achalasia
- failure of a sphincter to relax in response to a normal physiological stimulus, usually seen in the gastrointestinal tract.
Medical dictionary. 2011.
sphincteral achalasia
Look at other dictionaries:
ach|a|la|sia — «AK uh LAY zhuh», noun. Medicine. inability of a muscular organ to relax: »achalasia of the esophagus, sphincteral achalasia. ╂[< New Latin achalasia < a 4 without + Greek chálasis a slackening] … Useful english dictionary
sphincter — A muscle that encircles a duct, tube, or orifice in such a way that its contraction constricts the lumen or orifice. SYN: musculus s. [TA], s. muscle [TA]. [G. sphinkter, a band or lace] s. of ampulla s. of hepatopancreatic ampulla. anatomic s.… … Medical dictionary
