Anatomy study note · Abdomen

Inguinal ligament

The lower border of the external oblique aponeurosis, folded back on itself between the anterior superior iliac spine and the pubic tubercle.

Key points

• ASIS → pubic tubercle; folded lower edge of the external oblique aponeurosis.
• Lacunar ligament: medial end → pectineal line (femoral ring margin).
• Origin of internal oblique and transversus (lateral part).
• Fascia lata attaches to its lower border.
• Connective tissue: from leftover mesenchyme.
• Ligament/tendon: dense regular CT — parallel collagen bundles.

The full note in the atlas also covers

Features · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 6, PDF pp. 704–706, 749–750
• Inderbir Singh’s Human Embryology, ch. 7, PDF pp. 94–95
• BRS Cell Biology & Histology, 7th ed., ch. 6, PDF pp. 110–111

More from the abdomen

• Internal oblique
• Jejunum and ileum
• Kidney
• Large intestine
• Linea alba
• Liver
• Lumbar plexus
• Pancreas
• Peritoneum
• Portal vein
• Psoas major
• Pyramidalis

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