Biology · KS3 Y8 · Human Body Systems
Absorption in the gut
Absorption in the gutFree2:08Heddy Score 3 of 7, below the standard
What you need to know
- The small intestine absorbs digested food molecules such as glucose, amino acids, fatty acids and glycerol into the blood.
- Its wall is covered in finger-like villi that greatly increase the surface area for absorption.
- Cells on each villus have microvilli, which increase the surface area even further.
- Each villus has a good blood supply through many capillaries, and products of fat digestion enter a lacteal.
In this clip
Runs 2:08, from 0:09 to 2:17 of the full video.
Heddy ScoreSeven checks every clip must pass before students see it: trusted, on the map, accurate, focused, accessible, safe, and proven by students.3/7, Below the standard
See the seven stars
- Trusted source · passed. The creator's own upload, live and playable here.
- On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
- Spec-true · not judged yet. Accurate, and right for the current UK specification.
- Focused · passed. One idea, short enough to watch in one go.
- Accessible · passed. Good captions, clear sound and pictures.
- Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
- Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
Our students
Not enough students yet
Our own students' answers. These are what move ★7 Proven.On YouTube
How the Heddy Score works410K views · 8.05K likes · Science Sauce 125K subscribers
As reported by YouTube on 2026-11-02. Not part of the Heddy Score.Why we picked it
A brief, focused explanation of how villi give the small intestine a huge surface area for absorbing food.
Science Sauce on YouTubechecked 2026-10-22
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