False-colour scanning electron micrograph (SEM) of villi in the jejunum of the small intestine. Folds (villi) in the jejunum wall increase the surface area of the small intestine for its role in food absorption. Food digested in the stomach and duodenum is here absorbed through epithelial cells (blue),into blood capillaries contained in each villus. Goblet cells on this surface secrete mucous to protect the villi from digestive pro- cesses,and assist food to pass through the jejunum. Dead desquamating cells seen on the ridges of the villi are coloured yellow and orange. Magnification: x110 at 6x7cm size. Magnification: x170 at 4x5 inch size | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / UNIVERSITY LA SAPIENZA, ROME / DEPT. OF ANATOMY / PROF. P. MOTTA |
Taille de l’image : | 4736 px × 3775 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |