Male external genitalia and perineum

Contents of superficial perineal space

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Image #166-5
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Male external genitalia and perineum
Contents of superficial perineal space
The deep perineal fascia has been cut away to reveal the bulbospongiosus and ischiocavernosus muscles. The crura of the penis (5) are partially visible as is the corpus spongiosum penis (14). The superficial transverse perineal muscles are poorly developed in this specimen but an example of the muscle may be be seen in view 174-1.
1 . Right pointer: Superficial penile fascia Left pointer: Scrotal sac (retracted upward)
2 . Deep (Buck's) fascia of penis
3 . Bulbospongiosus muscle
4 . Ischiocavernosus muscle
5 . Right pointer: Crus of penis Left pointer: Ramus of ischium
6 . Pectineus muscle
7 . Ischial tuberosity
8 . Ischiorectal fossa
9 . Left pointer: Transverse perineal artery Right pointer: Superficial transverse perineal muscle (poorly developed)
10 . Central tendon of perineum
11 . Anus
12 . Levator ani muscle
13 . Inferior rectal nerve
14 . Corpus spongiosum of penis
15 . Superficial perineal fascia
16 . Inferior pubic ramus
17 . Obturator externus muscle
18 . Branches of nerve to bulbospongiosus entering posterior scrotal plexus (see 166-3)
19 . Upper pointer: Perineal artery Lower pointer: Transverse perineal artery
20 . Posterior scrotal nerve
21 . Ischial tuberosity