3D Abdo Anatomy

Phil Blyth

August 2025

Original Images by Nikolai Bogduk
 
Posterior Abdo

Instructions

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Multiple Layers

Multiple Layers

Original Sketch

1 Bones and Landmarks
  • Transpyloric Plane, Intertubercular, MCL x2
  • Umbilicus
  • Vertebrae
  • Costal Margin and Pelvic Brim
  • Nipples, ASIS, 4th 5th ICS
TranspyloricPlane
  • Midway Jugular Notch - Pubic Symphysis
  • Midway xiphisternum and umbilicus
  • Costal Margin 9th with Rectus Abdominus
  • Fundus of gallbladder
  • Pylorus of Stomach
  • Lower border L1
  • End of Spinal Cord
  • Separation Supra and Infracolic compartment
  • SMA
  • Splenic vein
  • Hilum R below and L above
2 Aorta and IVC
  • Aorta on L
    • T12 Coeliac
    • L1 SMA
    • L2 Renal (and Gonadal to follow)
    • L3 IMA
    • L4 Bifurcation
    • L5 IVC
    • SI joints Bifurcation into ext and int
  • IVC on R
3 Renal
  • R below L kidney, inclined by psoas
  • R Renal a behind IVC
  • Ureters onto SI jt by transverse process
  • Gonadals going wide
4 Organs
  • Spleen overshadowing kidney
  • Duodenum around
  • Pancreas over L2 extends to MCL
  • L and R Colons
  • Sigmoid over SI Jt
5 Remaining Organs
  • Diaphragm
  • Liver to L MCL
  • GB
  • Stomach to connect

My Sketch

1 Bones and Landmarks
  • Transpyloric Plane, Intertubercular, MCL x2
  • Umbilicus
  • Vertebrae
  • Costal Margin and Pelvic Brim
  • Nipples, ASIS, 4th 5th ICS
TranspyloricPlane
  • Midway Jugular Notch - Pubic Symphysis
  • Midway xiphisternum and umbilicus
  • Costal Margin 9th with Rectus Abdominus
  • Fundus of gallbladder
  • Pylorus of Stomach
  • Lower border L1
  • End of Spinal Cord
  • Separation Supra and Infracolic compartment
  • SMA
  • Splenic vein
  • Hilum R below and L above
2 Aorta and IVC
  • Aorta on L
    • T12 Coeliac
    • L1 SMA
    • L2 Renal (and Gonadal to follow)
    • L3 IMA
    • L4 Bifurcation
    • L5 IVC
    • SI joints Bifurcation into ext and int
  • IVC on R
3 Renal
  • R below L kidney, inclined by psoas
  • R Renal a behind IVC
  • Ureters onto SI jt by transverse process
  • Gonadals going wide
4 Organs
  • Spleen overshadowing kidney
  • Duodenum around
  • Pancreas over L2 extends to MCL
  • L and R Colons
  • Sigmoid over SI Jt
5 Remaining Organs
  • Diaphragm
  • Liver to L MCL
  • GB
  • Stomach to connect
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