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- Sphincter - Wikipedia
The sphincter urethrae, or urethral sphincter, controlling the exit of urine from the body At the anus, there are two anal sphincters which control the exit of feces from the body, the internal anal sphincter and external anal sphincter The inner sphincter is involuntary and the outer is voluntary
- Types and Function of Sphincters in the Body - Verywell Health
The opening of the sphincter, called the lumen, gets wider as the sphincter muscle relaxes (dilates) and smaller as the sphincter muscle tightens (contracts) There are different classes of sphincters in the human body:
- SPHINCTER中文(简体)翻译：剑桥词典 - Cambridge Dictionary
The distal part of each uterus provides a fertilization chamber filled with spermatozoa, followed by a sphincter-like part 来自 Cambridge English Corpus It is of little value in the management of incontinence due to detrusor instability or sphincter incompetence
- 括约肌 - 维基百科，自由的百科全书
括约肌（英語： Sphincter ）是人或一些动物身上的一种肌肉类型。这种类型的肌肉分布在管腔壁，當收缩的时候管腔就会被关闭，當放松的时候管腔就会开放。
- sphincter - 搜索 词典
必应词典为您提供sphincter的释义，美[ˈsfɪŋktər]，英[ˈsfɪŋktə(r)]，n 括约肌； 网络释义： 肛门括约肌；括约筋；扩约肌； 搜索优化
- Sphincter muscle | Esophageal, Gastrointestinal Urogenital | Britannica
Sphincter muscle, any of the ringlike muscles surrounding and able to contract or close a bodily passage or opening One of the most important human sphincter muscles is the sphincter pylori, a thickening of the middle layer of stomach muscle around the pylorus (opening into the small intestine)
- Sphincter - Simple English Wikipedia, the free encyclopedia
The sphincter (often spelled sphincter) is a type of circular muscle that can constrict (tighten) or relax to control the passage of substances through bodily openings or ducts They play a crucial role in regulating the movement of food, liquids, and waste in various systems within the body, primarily the digestive and urinary systems
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