Anatomy study note · Abdomen

Caecum

The blind pouch of the large intestine below the ileocaecal junction, in the right iliac fossa. About 6 cm long, fully covered by peritoneum but without a mesentery.

Key points

• Right iliac fossa; no mesentery but fully covered by peritoneum.
• Teniae converge on the appendix base.
• Ileocaecal valve is rudimentary.
• Caecal arteries from the ileocolic (SMA).
• Caecal bud of the post-arterial midgut.
• Colon: no villi, many goblet cells.
• Outer longitudinal muscle → teniae coli → haustra.

The full note in the atlas also covers

Relations · Features · Blood supply · Lymph drainage · Histology · Development

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 7, PDF pp. 861–864
• Inderbir Singh’s Human Embryology, ch. 13, PDF pp. 182–183, 186, 194
• BRS Cell Biology & Histology, 7th ed., ch. 16, PDF pp. 296–297

More from the abdomen

• Coeliac trunk
• Descending colon
• Duodenum
• Epididymis
• External oblique
• Gallbladder
• Iliac arteries
• Iliacus
• Iliohypogastric and ilioinguinal nerves
• Inferior epigastric vessels
• Inferior mesenteric artery
• Inferior vena cava

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