Dissection of male pelvis from a lateral approach
Relation of pelvic diaphragm to urogenital diaphragm and sphincter ani externus muscle
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Image #169-2
Dissection of male pelvis from a lateral approach
Relation of pelvic diaphragm to urogenital diaphragm and sphincter ani externus muscle
The internal pudendal artery has been divided and removed. The urogenital diaphragm has been retracted downward to expose the anterior border of the levator ani muscle. The manner in which the fibers or origin of the levator ani muscle blend with the obturator fascia (4) along the lateral pelvic wall may be observed in this specimen.
- Tendinous arch of levator ani muscle
- Acetabulum
- Acetabular labrum
- Obturator fascia
- Obturator nerve
- Periosteum
- Body of pubic bone (dissected)
- Sacrospinous ligament
- Internal pudendal artery (cut off)
- Ischial spine
- Coccygeus muscle
- Perineal branch of sacral nerve IV
- Anococcygeal ligament
- Coccyx
- Iliococcygeus muscle
- Pubococcygeus muscle
- Puborectalis muscle (15-17 make up the levator ani muscle)
- Deep part
- Superficial part
- Subcutaneous part (18-20 are part of the external anal sphincter)
- Central tendon of perineum
- Superior fascia of urogenital diaphragm (pulled downward)
- Urethra (opened)