G.E.P. Atlas of Ultrasound  

 
Urethro-vesical area:

Transvaginal sagittal section

 

 
  1. "Prepubien" (bulbo-cavernosus muscle).
  2. Arcuate ligament.
  3. Vagina.
  4. Bladder mucosa.
  5. Urethral mucosa.
  6. Anterior edge of the urethra.