Anatomy
·Pelvis & Perineum
Rectum & Anal Canal
⭐ PREMIUM
The rectum stores faeces; the anal canal controls continence. The dentate line divides two different worlds (embryology, blood, nerves, lymph).
RECTUM
• ~12 cm; three transverse rectal folds (valves of Houston); ampulla above the levator ani.
• No teniae, no appendices epiploicae, no mesentery (retroperitoneal/subperitoneal).
ANAL CANAL — the DENTATE (PECTINATE) LINE
• ABOVE: hindgut (endoderm…
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