miércoles, 28 de septiembre de 2011

DIGESTION

The digestion :

- First, food is chewed in the mouth, and mixed with saliva produced by the salivary glands. Gradually, a mass of chewed, soft food is formed.

- Then, this food moves down the pharynx and the oesophagus, and passes into the stomach.

- Next, it mixes with gastric juices in the stomach. This produces a thick liquid called chyme.

- Finally, the chyme leaves the stomach and reaches the small intestine. It mixes with juices from the intestine, the pancreas and the liver. All the substances which we require have now been separated.

No hay comentarios:

Publicar un comentario