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Dissection of muscles of male perineum and pelvic diaphragm

Root of penis; inferior fascia of urogenital diaphragm

For permissions information regarding the use of these images, please contact Drew Bourn at dbourn@stanford.edu

Image #174-2
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Dissection of muscles of male perineum and pelvic diaphragm
Root of penis; inferior fascia of urogenital diaphragm
The muscles of the superficial perineal space have been cut away to expose the crura (4) and bulb (5) of the penis in relation to the inferior fascia of the urogenital diaphragm.
1 . Body of penis
2 . Bulbospongiosus muscle (cut off)
3 . Corpus spongiosum of penis
4 . Crus of penis (small, not clearly outlined)
5 . Bulb of penis
6 . Left pointer: Muscle fibers emerging from deep compartment of perineum to join superficial transverse perineal muscle Right pointer: Central tendon of perineum
7 . Sacrotuberous ligament
8 . Levator ani muscle
9 . Fibers of puborectalis muscle (Levator ani muscle) that terminated in connective tissue of ischiorectal fossa
10 . Left pointer: External anal sphincter muscle Right pointer: Anus
11 . Body of pubic bone
12 . Inferior pubic ramus
13 . Obturator membrane
14 . Joint capsule of coccyx
15 . Inferior fascia of urogenital diaphragm
16 . Obturator internus muscle
17 . Ischial tuberosity
18 . Anococcygeal ligament
19 . Coccyx