- 外括约肌
- external: adj. 1.外部的,外面的;【哲学】外界的,客观的,物 ...
- sphincter: n. 【解剖学】括约肌。 sphincter ani 肛 ...
- sphincter external: 外括约肌
- contraction of external anal sphincter: 肛门外括约肌收缩
- external anal sphincter: 肛门外括约肌musculus sphincter ani externus{拉}; 外肛门括约肌
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