Male external genitalia and perineum

Deep perineal space (continued).

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Image #168-5

Male external genitalia and perineum Deep perineal space (continued). The internal pudendal artery has been divided and removed, together with the artery of the bulb, to reveal more completely the muscles within the deep perineal space. The proximal part of the spongy urethra (4) has been opened. 1 . Crus of penis (cut off) 2 . Corpus spongiosum of penis 3 . Duct of bulbourethral gland 4 . Spongy part of urethra (opened) 5 . Bulbospongiosus muscle 6 . Bulbourethral gland 7 . Bulb of penis (dissected) 8 . Central tendon of perineum 9 . Ischiocavernosus muscle 10 . External anal sphincter muscle 11 . Upper pointer: Dorsal nerve of the penis Lower pointer: Dorsal artery of penis 12 . Dorsal vein of the penis 13 . Pubic arcuate ligament 14 . Transverse perineal ligament 15 . Obturator internus muscle (visible through obturator membrane) 16 . Obturator nerve 17 . Inferior pubic ramus 18 . Sphincter muscle of urethra 19 . Internal pudendal artery (cut off) 20 . Perineal artery 21 . Posterior border of urogenital diaphragm 22 . Deep transverse perineal muscle