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InkFlaskCambridge IGCSE
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Page 03

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Inside a villus

identify

Try it yourself

Supplement. The diagram shows a villus cut along its length. Match each letter to the part it shows.

identify: name or select.

A villus cut along its length, with four parts lettered. P: the layer one cell thick that covers the surface of the villus. Q: in an inset magnified much more, the tiny projections on the outer side of these cells. R: one of the narrow vessels of the network just under the surface layer; the network joins two larger vessels, one on each side, that run down into the wall at the base. S: the tube in the middle of the villus, closed at its tip and open at the base. (enlarge)
Match each item
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Scope and sources

Cambridge IGCSE Biology 0610 · 2026–2028 v3 · Original learning materials.

Absorption (7.5.1–7.5.5): the small intestine as the region where nutrients are absorbed, where water is absorbed (small intestine and colon), and, for the Supplement, villi and microvilli, the structure of a villus and the roles of its capillaries and lacteal. Digestion itself is in the physical and chemical digestion modules; assimilation and the hepatic portal vein are not covered.

Apparatus, amounts and times in the experiment are illustrative. Real practical work follows a teacher-approved safety method.

Official Cambridge syllabus