A09_2_03_002

排尿時内尿道口Voiding internal urethral orifice(Ostium urethrae internum evacuans)

排尿時内尿道口【はいにょうじないにょうどうこう】 As the pelvic floor becomes lax, the urinary bladder descends. Its neck retracts like a funnel into the urethra, which appears shortened.

Pocket atlas of human anatomy

 

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