urethral sphincter
短语[网络] 尿道括约肌
词形变化
urethral sphincters
复数
urethral sphincters
释义与例句
n.
-
1.
The collective muscles used to control the flow of urine from the urinary bladder. These muscles surround the urethra, so that when they contract, the urethra is closed.
医学