[Verse 1]
Proximal jejunum, thick walls, heavy folds
Plicae circulares packed tight, that's the story it holds
Few arcades, long vasa recta reaching far and wide
Fat scarce in the mesentery, translucent on the side
Ileum shifts the picture, thinner walls appear
More arcades stacking layer up, vasa recta short and near
Fat creeps into the mesentery, opaque to the eye
Peyer's patches cluster anti-mesenteric, that's the lymphoid supply
[Chorus]
Jejunum — thick, few arcades, long vasa, folds are tall
Ileum — thin, multi-tiered, Peyer's patches on the wall
SMA descends, ileocolic marks the terminal end
Mesenteric root oblique, left-to-right, that's how anatomy bends
Remember the differences, drill the features cold
Jejunum proximal, ileum distal — that's the map you hold
[Verse 2]
Superior mesenteric artery, origin at L1
Gives jejunal and ileal branches, numbered every one
Left-sided branches feed the jejunum all the way
Right-sided sweeps toward the ileum, ileocolic crowns the day
Ileocolic artery — final branch descending right
Anterior and posterior caecal, appendicular in sight
Ileal branch anastomoses back to close the loop
Terminal ileum supplied, that's your critical troop
[Chorus]
Jejunum — thick, few arcades, long vasa, folds are tall
Ileum — thin, multi-tiered, Peyer's patches on the wall
SMA descends, ileocolic marks the terminal end
Mesenteric root oblique, left-to-right, that's how anatomy bends
Remember the differences, drill the features cold
Jejunum proximal, ileum distal — that's the map you hold
[Bridge]
Mesenteric root — fifteen centimetres, oblique diagonal track
Left upper, right lower, crossing structures at the back
Duodenojejunal flexure down to ileocecal groove
SMA and SMV run intimate, they never choose to move
Crossing anterior to the third duodenum, aorta, vena cava too
Ureter and psoas underneath, the retroperitoneal view
Mobilise the bowel, divide the attachments systematically
Respecting every crossing structure anatomically
[Verse 3]
Ileocecal valve sits flush at the cecum's medial wall
Terminal ileum delivers chyme, regulating every haul
Prevents reflux from the colon, a competent one-way gate
Lipocyte-rich submucosa reinforcing that estate
Lymphatics of the jejunum drain to juxta-intestinal nodes
Then on to intermediate mesenteric stations down those roads
Central nodes cluster near the SMA root origin site
Cisterna chyli receives the thoracic duct at night
Peyer's patches signal antigens in the ileal wall
M-cells sampling luminal content, mounting an immune call
[Chorus]
Jejunum — thick, few arcades, long vasa, folds are tall
Ileum — thin, multi-tiered, Peyer's patches on the wall
SMA descends, ileocolic marks the terminal end
Mesenteric root oblique, left-to-right, that's how anatomy bends
Remember the differences, drill the features cold
Jejunum proximal, ileum distal — that's the map you hold