CAIE IGCSE Biology EXTENDED 7.5.4 Structure of a villus
CAIE IGCSE Biology EXTENDED 7.5.4 Structure of a villus
Practise labelling villus diagrams and explaining how epithelium, microvilli, capillaries and lacteals support absorption.
How this is tested
- label capillaries, lacteals, epithelium and microvilli on villus diagrams
- link one-cell-thick epithelium and blood supply to diffusion of digested nutrients
- distinguish products absorbed by capillaries and lacteals from labelled villus structures