School Biology Project : Digestion IIII

by davincico
Last updated 11 years ago

Life Science

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School Biology Project : Digestion IIII

The Small Intestine is where MOST of the absorption and chemical digestion take place.Chyme is mixed with Bile( from liver),pancreatic juice,intestinal juices and other intestinal enzymes such as maltase, lactase and sucrase to break down the chyme and assist in nutrient absorption.Protein molecules are broken down into Amino acids;Fats into fatty acids and glycerol;Carbohydrates into Simple sugars(Glucose).

Absorbed nutrients flow in the bloodstream to the liver where they are further metabolised and then either stored or or sent to cells in other parts of the body.Usually,it takes food 4-5 hrs to move through the Small Intestine.

After being churned and mixed with digestive juices in the stomach, chyme moves slowly into the small intestine . The small intestine is the longest section of the digestive tract (approx 5.1M) and is divided into three segments: the duodenum, jejunum and ileum, each of which performs different digestive functions. Chyme is propelled through the small intestine by peristalsis.

DIGESTION:The Small Intestine's Functions

The Functions


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