Login

Join for Free!
118239 members


digestion in the 3 parts of the small intestine....

Human Anatomy, Physiology, and Medicine. Anything human!

Moderator: BioTeam

digestion in the 3 parts of the small intestine....

Postby xcandykissesx33 » Thu Dec 22, 2005 1:57 pm

hey! ok so here's my question! i know that in the small intestion the chemical digestion of chyme takes place but my teacher wants to know like what happens in all 3 sections of the small intestine?! anyone know?! thanks soooo much for your help
xcandykissesx33
Garter
Garter
 
Posts: 1
Joined: Thu Dec 22, 2005 1:54 pm

Postby Navin » Fri Dec 23, 2005 6:15 am

The 3 sections appear in this order: duodenum, jejunum and ileum.

Duodenum:
Stomach empties its contents into here. Bile duct excretes bile (to increase surface area of fat) here. Pancreas secrete pancreatic juice via the pancreatic duct here. Pancreatic juice contains these enzymes: lipase for fat digestion, amylase for starch digestion and trypsinogen (becomes trypsin) for protein digestion. It also contain sodium bicarbonate to make an alkaline pH environment.

Duodenum/Jejunum/Ileum:
Intestinal juice is secreted by all three parts. It contains these enzymes: Erepsin for peptone digestion, lipase for fat digestion, maltase to digest maltose, sucrase to digest sucrose and lactase to digest lactose.

Ileum:
The walls of the ileum contain villi which absorb the end-products of digestion.
Botany is the study of what? Bottoms!
User avatar
Navin
Coral
Coral
 
Posts: 277
Joined: Thu Jun 09, 2005 2:23 pm
Location: Singapore (Asia Pacific)


Return to Human Biology

Who is online

Users browsing this forum: No registered users and 1 guest