digestive system

mouth

• teeth and tongue use mechanical digestion.
• create bolus.

small intestine

• secreates pancreatic juice and bile.
• bile doesnt contain enzymes.
• most digestion happens in the doudenum.
• ileum is the place of final digestion and absorption.
• ileum has large sa, villi and micro villi, sort diffusion distance and a high conc gradient.

salivary amylase starts digestion of starch.
pancreatic amylase digests remaining starch in the duodenum.
disaccharides in e.c complete digestion from disaccharides to monosaccharides.

• maltose (maltase) -> glucose.
• sucrose (sucrase) -> glucose & fructose
• lactose (lactase)  -> glucose & galactose