Lane Medical Library

Bassett Collection of Stereoscopic Images of Human Anatomy

KEYWORDS: Muscles and tendons, Bones joints cartilage.

Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

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