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Transcript of Digestive System
gastric enzymes-hydrochloric acid & pepsin
duodenum jejenum ileum Common
absorbs fluids & salts Descending Colon:
holds the resulting waste Sigmoid Colon Rectum anus
Cellular Debris Bacteria Indigestible Food Residue Fats Minerals Water The primary function of the digestive system is to
break down and digest foods and nutrients such
as carbohydrates, vitamins, proteins, fats, and
minerals into a form that cells can use for energy,
repair, and reproduction because cells can't use
them in the form they are in as food.
Ingestion Digestion Absorption Egestion
Interactions With Other Systems Immune System lysosome enzyme &
Nervous System psychic secretion &
Circulatory System villi & absorption
Muscular System peristalsis &
esophageal sphincter Stomach
fundus pylorus pyloric sphincter
-gastric juices/enzymes Small Intestine Digestion Pancreatic Juices Liver Small Intestine carbohydrates,
lipids, nucleic acid,
starch, fat, protein
lipase sodium bicarbonate fats bile Proteins, starch maltase, sucrase,
peptidase Chyme mixes with the digestive enzymes
from the pancreas, liver, and small
intestine in the duodenum. Pancreas The Digestive
...om nom nom... Myra Khan
Devin Lewellen Taking Care of Your Digestive System...
watch what you eat!
eat fibers-fruits & vegetables
not so much sugar!
avoid spicy & fatty foods--they prevent you
from getting the essential nutrients
follow the food pyramid! not the cookie
brush your teeth!
Disorders! :O Peptic Ulcer Diarrhea Constipation Appendicitis Diseases! :O Gastroesophageal Reflux Disease (GERD) Ulcerative Colitis Colon Cancer Esophageal Sphincter isn't working properly....
Treatment: Change your diet or medication
Prevention: Eat Healthy! Polyps!
screen, screen, screen!
-annual rectal exam-40
-blood & stool testing-50 Ulcers are ptoduced in the colon's mucus
Usually mild symptoms, but in severe cases there may be:
extreme abdominal pain
possibility of hemorrhaging
risk of getting colon cancer
dietary changes (no raw fruits and vegetables)
corticosteroids/other anti-inflammatory drugs
proctocolectomy & ileostomy
Cooking Assistant $22,233 - 28,695
Executive Chef $57,471 - 87,563
Executive Pastry Chef $47,756 - 71,559
Food Scientist $49,862 - 75,800
Hotel Manager $68,000 - 124,756
Line Cook $20,169 - 26,396
Restaurant Manager $38,533 - 56,491
Sous Chef $33,912 - 53,123
Masters Degree-1-2 years
Bachelor's Degree-4 years
Associates Degree- 2 years
*Education and Experience plays a big role
in the salary
-salary depends on education
-less than 1 year- $30,000-$54,000
-10-19 years-$64,000-$98,000 Careers
-complete medical school
-3 year Internal Medicine residency
-specialized training-2-3 years
Research is being done on 3 main topics:
-certain nerves and their control over the stomach
-genes and mutations in reaction to medication that
affects the nerves that control the digestive system
-what causes our stomachs to know that the body is
another research topic is changing bacteria in the
digestive system as a treatment for obesity Fun Facts! :D Food stays in the stomach for about 4-6 hours, and
in the small intestine for 4-8 hours
The liver is the largest organ in the body
The stomach can hold about a gallon of food
Villi in the small intestine increase the absorbing surface
area by about 600 folds--equivalent to half of a
The appendix doesn't do anything. Biologists believe it's
left over from another time in evolutionary history.
The small intestine is about 20 feet long--about 3 times
the size of the large intestine Homeostasis