Dissection of male pelvis from a lateral approach

Pelvic organs in situ, close-up lateral view

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Image #169-7

Dissection of male pelvis from a lateral approach Pelvic organs in situ, close-up lateral view Attention is focused in this close-up photograph on the central part of the specimen that is shown in the preceding view. Of particular interest is the relation of the pelvic plexus (20) to the ureter (17), bladder (10), prostate (25) and rectum (22). 1 . Ductus deferens 2 . Obturator artery 3 . External iliac lymph node 4 . Obturator nerve 5 . Lateral umbilical ligament 6 . External iliac vein 7 . Parietal peritoneum (external aspect) 8 . Iliopubic eminence (preserved for orientation) 9 . Iliopectineal arch 10 . Urinary bladder 11 . Superior vesical artery 12 . Pectineus muscle (cut off) 13 . Vesical venous plexus 14 . Pubic symphysis 15 . Puboprostatic ligament 16 . Inferior vesical artery 17 . Ureter (note associated plexus of nerves and continuation of external layer of muscle of bladder onto lower part of ureter) 18 . Internal pudendal artery 19 . Sciatic nerve (retracted) 20 . Pelvic plexus (note pelvic ganglia within plexus) 21 . Prostatic vein 22 . Rectum 23 . External anal sphincter muscle 24 . Nerve to Levator ani muscle 25 . Prostate (covered by prostatic fascia) 26 . Medial border of Levator ani muscle 27 . Right pointer: Superior fascia of urogenital diaphragm Left pointer: Membranous part of urethra (surrounded by sphincter of urethra) 28 . Spongy part of urethra (opened) 29 . Transverse perineal ligament 30 . Dorsal vein of the penis 31 . Pubic arcuate ligament (cut in midline)