sphincter
sphincter — 名詞
- sphinctersingular
- sphinctersplural
1. a ring-shaped muscle inside the body that tightens to close a natural opening or
括約肌
控制身體管道開閉的環狀肌肉
a ring-shaped muscle inside the body that tightens to close a natural opening or passage, controlling the flow of waste or fluids
The anal sphincter works without you having to think about keeping it closed.
肛門括約肌會自動運作，所以你不需要刻意去想如何保持緊閉。
collocation: works without effort
After a large meal, Lien felt a sphincter relax to let gas escape from her stomach.
吃完一頓大餐後，Lien 感覺到一個括約肌放鬆，讓胃裡的氣體排出來。
Weak sphincter muscles can sometimes be strengthened through daily pelvic floor exercises.
無力的括約肌有時可以透過每天做骨盆底運動來強化。
The pyloric sphincter acts like a gate between the stomach and the small intestine.
幽門括約肌的作用就像胃與小腸之間的一道閘門。
Lakshmi's doctor told her that a damaged sphincter might require surgery to repair.
Lakshmi 的主治醫師告訴她，受損的括約肌可能需要手術修復。
- valve
Valve is a general term for any structure that controls flow; sphincter specifically refers to a ring of muscle in the body.
文法句型
countable noun
用法筆記
Frequently used with an adjective naming the specific location or type, such as anal sphincter, cardiac sphincter, or pyloric sphincter.