| 释义 |
Definition of sphincter in English: sphincternoun ˈsfɪŋktəˈsfɪŋktər Anatomy A ring of muscle surrounding and serving to guard or close an opening or tube, such as the anus or the openings of the stomach. Example sentencesExamples - Then your brain tells your pelvic floor muscles to relax and your sphincter (the opening at the neck of your bladder) to open.
- This smooth muscle is the involuntary sphincter of the posterior urethra in the male.
- Anal manometry is performed to assess the anal sphincter, pelvic floor, and associated nerves.
- This rapidly closes the duodenal sphincter to contain the stomach contents.
- It is girdled by the external anal sphincter, a striated muscle structure that is part of the pelvic floor musculature.
Derivatives adjective Anatomy In addition, with respect to the other muscles in the body with an analogous sphincteral activity (gastrointestinal and genitourinary tracts), it is distinguished by the mechanism of contraction, rather than of dilation. Example sentencesExamples - The interposed jejunal segment fulfilled efficiently the transit and sphincteral functions of the esophagus.
- It covers the fields of neurology, locomotion, cardiovascular and respiratory pathology as well as sphincteral function.
- He takes note of the threat to his sphincteral cavity and the final resting place of the camera if he takes a picture of me.
- It is especially to be remembered in sphincteral paralyses, so common after long illness in which spinal enervation has played an important role.
adjectivesfɪŋkˈtɛrɪk Anatomy Progestational hormones also affect the force of contraction of the sphincteric muscle and various gastrointestinal hormones may do so as well. Example sentencesExamples - If technical guidelines are rigorously followed, the feared complications associated with surgical procedures, such as anal stricture and sphincteric injuries, are largely reduced.
- Generally, the treatments for sphincteric weakness include pelvic floor exercises, injections of a bulking agent, or an artificial urinary sphincter.
- Eighty-five percent of the patients had intrinsic sphincteric deficiency, while 15 percent had genuine stress urinary incontinence.
- Accompanying sensory and sphincteric symptoms are also common.
Origin Late 16th century: via Latin from Greek sphinktēr, from sphingein 'bind tight'. Definition of sphincter in US English: sphincternounˈsfiNGktərˈsfɪŋktər Anatomy A ring of muscle surrounding and serving to guard or close an opening or tube, such as the anus or the openings of the stomach. Example sentencesExamples - Then your brain tells your pelvic floor muscles to relax and your sphincter (the opening at the neck of your bladder) to open.
- Anal manometry is performed to assess the anal sphincter, pelvic floor, and associated nerves.
- This smooth muscle is the involuntary sphincter of the posterior urethra in the male.
- This rapidly closes the duodenal sphincter to contain the stomach contents.
- It is girdled by the external anal sphincter, a striated muscle structure that is part of the pelvic floor musculature.
Origin Late 16th century: via Latin from Greek sphinktēr, from sphingein ‘bind tight’. |