membranous part

• 膜部

membranous part的用法和样例：

例句

1. Active continence is achieved by voluntary contraction of the levator ani musculature, which surrounds the apex of the prostate and membranous urethra.
   前列腺尖部和膜部周围的提肛肌的主动收缩可以导致主动性控尿。
2. The external sphincter, at the leel of the membranous urethra, is often depicted as a "sandwich" of muscles in the horizontal plane.
   外括约肌，位于尿道膜部水平，常被描述为水平平面上的三明治样肌肉。