@instituteofhumananatomy: Your protein doesn’t get absorbed in your stomach. The real work happens across about 20 feet of small intestine. 🥩 After your stomach breaks protein down, the small intestine does the absorbing, and it has three parts. The duodenum, the short C-shaped segment after the stomach, where enzymes finish chopping protein into amino acids. The jejunum, the long middle section that’s the main absorption highway into your blood. And the ileum, the final stretch that mops up what’s left, plus B12 and bile salts. Quick note: it’s the ileum, i l e u m. Don’t confuse it with the ilium, i l i u m, a bone of your hip. Same sound, totally different body part. One of those names that trips students up constantly. So next time you down a protein shake, picture it getting dismantled into amino acids and absorbed inch by inch. From mouth to muscle. 👉 Could you find the duodenum or ileum on a 3D body? Test yourself with IOHA Daily, our free one-minute anatomy game. Play today’s puzzle at the link in bio. Follow us for more. #LearnOnTikTok #TikTokLearningCampaign #LearnBiologyOnTikTok #smallintestine #duodenum #jejunum #ileum #digestivesystem #anatomy #humanbody #iohaanatomy

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Friday 16 October 2026 14:05:08 GMT