biojournal2

References

8. http://www.nexiumresearch.com/digestive_system_facts.html

7. http://kidshealth.org/kid/htbw/digestive_system.html

6. http://library.thinkquest.org/J0112205/interesting_facts.htm

5. http://digestive.niddk.nih.gov/ddiseases/pubs/yrdd/

4. http://www.nlm.nih.gov/medlineplus/ency/imagepages/8832.htm

3. http://en.wikipedia.org/wiki/Small_intestine

2. InScience Textbook Volume 1

1.http://www.hsc.csu.edu.au/senior_science/core/life_chem/9_2_5/925net.html

Extra Information about the small intestine:Duodenum: This is the part where most of the digestion in the whole body happens here. Juices from the pancreas and bile are mixed with the chyme here.Jejunum: The chemical digestion should be finalised here. Villi on the surface increases the amount of surface area for absorption to happen, as most absorption happen here.Ileum: This is the third and final portion of the small intestines. Vitamins, bile and whatever products that the jejunum did not absorb are absorbed here.

1.enzyme-a substance capable of producing certain chemical changes in organic substancesby catalytic action2. peristalsis: relaxation and contraction of the muscles in the oesophagus, stomach and small intestine3. alimentary: involving the function of nutrients4. heartburn - a burning sensation in the oesophagus to the stomach due to the acid entering the oesophagus5. chyme - semi-digested fluid food from the stomach.6. villi - worm-like structures on the intestines to absorb nutrients into the bloodstream7. defecate - excretion of faeces through the anus8. faeces: undigested waste that is passed out through the body through the anus

Glossary

Interesting Facts about Digestion-The gullet is approximately 25cm long.-Digestive problems cost Americans $50 billion each year in both direct costs and absence from work.-In the mouth, food is either cooled or warmed to a more suitable temperature.

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