1. Digestive System at a Glance Your digestive system is a group of organs that break down food so that it can be used by the body

2. Food passes through the digestive tract. The digestive tract includes your mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum, and anus

3. The liver, gallbladder, pancreas, and salivary glands are also part of the digestive system

4. Breaking Down Food In chemical digestion, large molecules are broken down into nutrients with the aid of enzymes The breaking, crushing, and mashing of food is called mechanical digestion

5. Digestion Begins in the Mouth Teeth With the help of strong jaw muscles, teeth break and grind food

6. Saliva contains an enzyme (amylases) that begins the chemical digestion of carbohydrates

7. Leaving the Mouth Once the food has been reduced to a soft mush, the tongue pushes it into the throat, which leads to a long, straight tube called the esophagus

8. Bifid uvula Uvulitis

9. The epiglottis and peristalsis

10. The Harsh Environment of the Stomach The stomach is a muscular, saclike, digestive organ attached to the lower end of the esophagus

11. Gastric juice is made up of hydrochloric acid (HCL) and pepsin, where long strains of protein will be cut into smaller chains of amino acids

12. Peptic Ulcer Disease, Gastric Ulcer, Stomach Ulcer

13. The Pancreas and Small Intestine The Pancreas is an organ located between the stomach and small intestine. Its makes fluids that protect the small intestine from the acid in chyme

14. The Liver and the Gallbladder The liver is a large, reddish brown organ that helps with digestion by making bile (or lipases) to break up fat. The gallbladder is where bile is stored

15. Homeostasis and Storage Maintain a constant level of sugar inside the blood Extra sugar is converted into glycogen

16. When sugar is needed, glycogen is break down into glucose The pancreas release insulin for this to happen

17. The liver also stores irons and vitamins. Sometimes even stored heavy metals if it can not break it down

18. Bile is stored in a saclike organ called the gallbladder, which squeezes the bile into the small intestine The liver also stores excess nutrients until the body is ready to absorb them into the bloodstream

19. The Small Intestine is a muscular tube that is about 2.5 cm in diameter. In the small intestine, nutrients are absorbed into the bloodstream through fingerlike projections called villi Sugars and amino acids enter the bloodstream through capillaries

20. The End of the Line Material that can’t be absorbed into the blood is pushed into the large intestine

21. The large intestine absorbs most of the water in undigested material and changes the liquid into semisolid waste material called feces, or stool Feces are stored in the rectum until they can be released

22. It has taken each of your meals about 24 hours to make this journey through your digestive system Feces pass to the outside of the body through an opening called the anus

23. Cancer of the Pancreas Colon Cancer Gastric Cancer, Stomach Cancer

24. Constipation Diarrhea

25. http://www.youtube.com/watch?v=fff7xunqgtI&feature=relatedhttp://www.youtube.com/watch?v=fff7xunqgtI&feature=related Digestion http://www.youtube.com/watch?v=q3986Yfl5cU&feature=relatedhttp://www.youtube.com/watch?v=q3986Yfl5cU&feature=related The Digestive System animation http://www.youtube.com/watch?v=Q-n_Q0qKXzg&NR=1http://www.youtube.com/watch?v=Q-n_Q0qKXzg&NR=1 Digestive System (2nd Ed., Rev.) (Clip) http://www.youtube.com/watch?v=IxNpXO8gGFM&feature=relatedhttp://www.youtube.com/watch?v=IxNpXO8gGFM&feature=related Digestion 2 http://www.youtube.com/watch?v=uIRHfdrixmA&feature=relatedhttp://www.youtube.com/watch?v=uIRHfdrixmA&feature=related Enzymes, Food Digestion http://www.youtube.com/watch?v=qzjjW--I-2Q&feature=relatedhttp://www.youtube.com/watch?v=qzjjW--I-2Q&feature=related Endocrine System, Pancreas http://www.youtube.com/watch?v=sCn5uvvc3WEhttp://www.youtube.com/watch?v=sCn5uvvc3WE How the Body Works : The Digestive System http://www.youtube.com/watch?v=xu5jDCX2cHMhttp://www.youtube.com/watch?v=xu5jDCX2cHM How the Body Works : The Small Intestine http://www.youtube.com/watch?v=4bXZRgJ-1fkhttp://www.youtube.com/watch?v=4bXZRgJ-1fk How a peptic ulcer develops