1 / 46

Topic: Nutrition Aim: How does the Digestive system work? HW: Surface area lab

Topic: Nutrition Aim: How does the Digestive system work? HW: Surface area lab. Do Now: explain the cartoon. Accessory/ Helper organs. Organs that help the digestive system Help by producing digestive juices that contain enzymes Food DOES NOT pass through these organs.

jennya
Download Presentation

Topic: Nutrition Aim: How does the Digestive system work? HW: Surface area lab

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Topic: Nutrition Aim: How does the Digestive system work? HW: Surface area lab Do Now: explain the cartoon

  2. Accessory/ Helper organs Organs that help the digestive system Help by producing digestive juices that contain enzymes Food DOES NOT pass through these organs

  3. Salivary Glands • Several of glands that secrete saliva into the oral cavity • Saliva contains water, mucus, and enzyme amylase. • Functions: cleansing action on the teeth. • moistens & lubricates food • begins the chemicaldigestion of starches (amylase)

  4. Liver Stomach Gall bladder Duodenum Pancreas

  5. 2. Liver

  6. Liver is: • Largest internal organ • Produces bile • Bile then travels to the gall bladder.

  7. BILE Function of bile Emulsification of fat when bile breaks down fats into smaller droplets Big fat droplet

  8. 3. Gall Bladder

  9. Function: • Stores bile • Sends bile to the small intestine through a duct (tube)

  10. 4.Pancreas

  11. Function: • Secretes (releases) pancreatic juice into the small intestine • Pancreatic juices Consists of enzymes that break down 3 main nutrients proteins, fats, & carbs

  12. 5. Villi

  13. Tiny fingerlike projections (folds) on lining of small intestine

  14. The villi contain blood vessels for absorption of nutrients into bloodstream

  15. Digested nutrients move (are absorbed) into the bloodstream By diffusion

  16. Role in digestive process: • Increases surface area for nutrient absorption (allows the small intestine to absorb more nutrients) LAB activity

  17. Read the poem and answer the question at the end. Do Now:

  18. Topic: Nutrition Aim: How can the digestive system malfunction? Hw: textbook pg 534 1-10 21,25 pgs. 536 2-6,10,13-15,22 pg562 1-17,20-22,24 The process is called Digestion http://www.youtube.com/watch?v=a6gChlcBDmQ http://www.youtube.com/watch?v=58YNYqN6lko

  19. Diarrhea When too little water is absorbed from the Large Intestine

  20. Frequently caused by infections or stress

  21. Can lead to dehydration Treatment: If dehydration occurs  drink water Medication

  22. Constipation Feces moves too slow through large intestine because too much water is absorbed out of the large intestine

  23. Results in difficulty egesting feces

  24. Treatment: Drink more water Eat more roughage/fiber Laxatives

  25. Appendicitis Infected appendix that must be removed

  26. Build up of the left over bile that hardens over time into stone-like formations Gall stones

  27. Could interfere with transport of liquified bile to the small intestine Causes pain/discomfort Treatment: Removal by surgery

  28. Hole in the lining of the small intestine or stomach.Cause not definiteStress is contributing factor ULCER

  29. What is vomit? It’s the mushed up, half digested food from you stomach, mucus, saliva, acids, and other chemicals that help digest food. For whatever reason, the muscles in your abdomen contract and squeeze down on the stomach, then the valve between your stomach and your esophagus opens, and the stuff in your stomach starts to rise up.

  30. Did you know.... • An adult esophagus (also called gullet) ranges from 10 to 14 inches in length, and 1 inch in diameter • We make 1 to 3 pints of saliva a day • An adults stomach can hold approximately 1.5 liters of material • Food sloshing in the stomach can last 3-4 hours • The stomach's wall is lined with three layers of powerful muscles

  31. Did you know.... • The Average human being consumes about 500kg of food per year. • Within the colon, a typical person harbors more than 400 distinct species of bacteria • On average, the stomach produces 2 liters of Hydrochloric Acid (HCl) daily

  32. Did you know.... • A full grown horse’s coiled up intestines are 89 feet long • Food stays in your stomach for 2 to 3 hours • Americans eat about 700 million pounds of peanut butter. • Americans eat over 2 billion pounds of chocolate a year. • In your lifetime, your digestive system may handle about 50 tons!!

  33. Did you know.... • What you ate for breakfast, that was not digested will come out in about 48 hours-normally. • From intake to outlet, the digestive tract is about thirty feet long

More Related