Internal abdominal wall and
inguinal region
Mathew Wedel, 2015
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Abdominal Wall & Inguinal Region: Structures Linked to Gut Tube & Urogenital System, Study notes of Anatomy
An in-depth exploration of the anatomy of the abdominal wall and inguinal region, focusing on the structures associated with the gut tube and urogenital system. It covers various ligaments, vessels, and muscles, including the midline structures and those derived from the iliac vessels. Additionally, it discusses the contrast between unpaired and bilaterally paired structures and their roles in the body.
What you will learn
- What are the major nerves and vessels located in the Triangle of Pain and Triangle of Doom?
- What are the differences between indirect, direct, and femoral hernias in terms of anatomy and prevalence?
- What are the midline structures associated with the gut tube and urogenital system?
- What are the structures derived from the iliac vessels and how do they differ from midline structures?
- What is the function of the rectus abdominis muscle in relation to the inguinal region?
Typology: Study notes
2021/2022
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Internal abdominal wall and
inguinal region
Mathew Wedel, 2015
gut tube
gut tube
gut tube
dorsal mesentery
ventral mesentery
visceral peritoneum
parietal peritoneum
dorsal mesentery
visceral peritoneum
parietal peritoneum
MIDGUT &
HINDGUT
FOREGUT
anterior superior iliac spine (ASIS)
pubic tubercles
pubic symphysis
anterior superior iliac spine (ASIS)
pubic tubercles
pubic symphysis
inguinal ligament (Poupart’s ligament
iliopectineal arch
lacuna musculorum
lacuna vasorum together constitute retroinguinal space
lateral femoral cutaneous N
femoral N
iliacus (lateral) and psoas (medial) MM
lacuna musculorum
lacuna vasorum together constitute retroinguinal space
pectineal ligament (Cooper’s ligament)
lacunar ligament (Gimbernat’s ligament)
umbilicus - single
falciform ligament (ventral mesentery)
- single
ligamentum teres (obliterated umbilical V)
- single
umbilicus - single
ligamentum teres (obliterated umbilical V)
- single
falciform ligament (ventral mesentery)
- single
bladder
mediaN umbilical lig. (obliterated urachus)
- single
umbilicus - single
ligamentum teres (obliterated umbilical V)
- single
falciform ligament (ventral mesentery)
- single
mediaN umbilical lig. (obliterated urachus)
- single
bladder
mediaL umbilical lig. (obliterated umbilical A)
- paired
internal iliac A (many branches, see future lecture)
- paired
rectus abdominis M
umbilicus - single
ligamentum teres (obliterated umbilical V)
- single
falciform ligament (ventral mesentery)
- single
mediaN umbilical lig. (obliterated urachus)
- single
bladder
mediaL umbilical lig. (obliterated umbilical A)
- paired
internal iliac A (many branches, see future lecture)
- paired
lateral umbilical fold (inferior epigastric A&V)
- paired
Contrast the unpaired, midline structures associated with the gut tube and urogenital system with the bilaterally paired structures derived from the iliac vessels.
rectus abdominis M
interfoveolar ligament (Hesselbach’s ligament)
- continuous with transversus abdominis M
ductus deferens
testicular A&V (internal spermatic vessels)
deep inguinal ring (in lateral umbilical fossa)
femoral ring (entrance to femoral canal)
deep inguinal ring (in lateral umbilical fossa)