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Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of female pelvis froma lateral approach

Sphincter ani externus muscle, close-up view

Image #159-6

KEYWORDS: Muscles and tendons, Bones joints cartilage.

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Dissection of female pelvis froma lateral approach
Sphincter ani externus muscle, close-up view
The specimen shown in the previous view is here seen in a close-up centered on the sphincter ani externus muscle.
  1. Levator ani muscle (pointer on puborectalis muscle)
  2. Inferior rectal artery (small branch cut off)
  3. Anococcygeal nerve
  4. Anococcygeal ligament
  5. Area of communication between ischiorectal fossae of two sides
  6. Deep part
  7. Superficial part
  8. Subcutaneous part (6-8 refer to the external anal sphincter)
  9. Anus
  10. Longitudinal muscle layer of anal wall
  11. Central tendon of perineum
  12. Vaginal wall
  13. Vestibule of vagina (opened by removal of labia on right side)
  14. Ischiorectal fossa (remnant of anterior recess)
  15. Obturator fascia
  16. Dorsal artery of clitoris
  17. Crus of clitoris
  18. artery of vestibular bulb
  19. Vestibular bulb
  20. Major vestibular gland