Dissection of male pelvis from a lateral approach
Sacral plexus and pelvic diaphragm, medial view with blood vessels removed
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Image #172-6
Dissection of male pelvis from a lateral approach
Sacral plexus and pelvic diaphragm, medial view with blood vessels removed
The arteries and veins have been removed from the central area of dissection to expose the sacral plexus as it passes through the greater sciatic foramen.
- Iliolumbar artery
- Psoas major muscle
- Iliacus muscle
- Obturator nerve
- Femoral nerve
- Linea terminalis
- Ductus deferens (cut off)
- External iliac artery and vein (passing downward deep to inguinal ligament)
- Obturator artery
- Pubic symphysis (sectioned)
- Obturator internus muscle (covered by obturator fascia)
- Tendinous arch pelvic fascia
- Urethra (opened)
- Urogenital diaphragm (dissected)
- Lumbosacral trunk
- Lateral sacral artery
- Superior gluteal artery
- Sympathetic trunk (pointer on ganglion)
- Left pointer: Greater sciatic foramen Right pointer: Sciatic nerve
- Sacrum (partially resected)
- Sacral nerve III (ventral ramus)
- Piriformis muscle
- Sacral nerve IV
- Upper pointer: Inferior gluteal artery Lower pointer: Internal pudendal artery
- Nerve to Levator ani muscle
- Coccygeus muscle
- Levator ani muscle
- Anal canal