Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of female pelvis from a lateral approach

Levator ani and coccygeus muscles; sphincter ani externus, lateral view

Image #159-5

KEYWORDS: Muscles and tendons, Bones joints cartilage, Vasculature.

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

Dissection of female pelvis from a lateral approach
Levator ani and coccygeus muscles; sphincter ani externus, lateral view
The pudendal vessels and nerves have been cut away to reveal the lateral aspect of the levator ani muscle, the sacrospinous ligament and the coccygeus muscle. The component parts of the sphincter ani externus (13, 14, 15) are also visible.
1 . Superior gluteal artery
2 . Sciatic nerve
3 . Inferior gluteal artery
4 . Piriform muscle (cut across)
5 . Inferior gluteal nerve
6 . Middle cluneal nerve (from dorsal branch of 2nd sacral nerve)
7 . Coccyx (periosteum removed)
8 . Sacrospinous ligament (coccygeus muscle fused with ligament, the latter rather indistinct)
9 . Ischial spine
10 . Coccyx (tip)
11 . Levator ani muscle (pointer on pubococcygeal part of muscle)
12 . Anococcygeal ligament
13 . Deep part
14 . Superficial part
15 . Subcutaneous part (1315 refer to the external anal sphincter)
16 . Anus
17 . Longitudinal muscle of anal canal
18 . Superior gluteal nerve
19 . Left pointer: Lymph node Right pointer: Margin of greater sciatic notch
20 . Ala of ilium
21 . Origin of rectus femoris muscle
22 . Acetabulum
23 . Obturator nerve
24 . Tendinous arch of levator ani muscle (indistinct, see discussion with 158-7)
25 . Levator ani muscle (pointer on puborectalis muscle)
26 . Body of pubic bone (partially removed)
27 . Obturator fascia
28 . Body of clitoris
29 . Vestibular bulb
30 . Major vestibular gland
31 . Central tendon of perineum
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