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Male external genitalia and perineum

Bulb of penis and deep perineal space; artery of bulb and duct of bulbourethral gland

Image #168-3

KEYWORDS: Vasculature.

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Male external genitalia and perineum

Bulb of penis and deep perineal space; artery of bulb and duct of bulbourethral gland

The left half of the penile bulb has been opened and cleared of trabeculated erectile tissue. The area of attachment of the bulb to the urogenital diaphragm (9) has been preserved with the artery of the bulb passing through it. The duct of the bulbourethral gland (5) has been dissected from the point at which it emerges from the urogenital diaphragm to its site of penetration of the urethral wall, a distance of approximately two centimeters. The deep perineal space, located between the fascial layers of the urogenital diaphragm, has been opened by the partial resection of the perineal membrane.

1 .	Corpus spongiosum of penis
2 .	Crus of penis (cut across)
3 .	Spongy part of urethra (external aspect)
4 .	Bulbospongiosus muscle
5 .	Duct of bulbourethral gland
6 .	Ischiocavernosus muscle
7 .	Bulb of penis (left half dissected)
8 .	Central tendon of perineum
9 .	Inferior fascia of urogenital diaphragm (tissue of bulb of penis removed)
10 .	Artery of bulb of penis
11 .	Deep transverse perineal muscle
12 .	Posterior border of urogenital diaphragm
13 .	Perineal artery
14 .	Spermatic cord
15 .	Body of pubic bone
16 .	Obturator nerve
17 .	Upper pointer: Dorsal nerve of the penis Lower pointer: Pubic arcuate ligament (in background)
18 .	Dorsal artery of penis
19 .	Upper pointer: Deep artery of penis Lower pointer: Transverse perineal ligament (In background)
20 .	Ramus of ischium
21 .	Internal pudendal artery