1 / 10

Digestion

Digestion. Presented by the Stomach (Primarily...). Stomach. Stores _____________ (human capacity is ____________) This is the site of early _____________ digestion “J”-shaped It does not absorb _________________ The nutrients are still too large Only absorbs: Water Glucose Salts

benjamin-barber
Download Presentation

Digestion

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. Digestion Presented by the Stomach (Primarily...)

  2. Stomach • Stores _____________ (human capacity is ____________) • This is the site of early _____________ digestion • “J”-shaped • It does not absorb _________________ • The nutrients are still too large • Only absorbs: • Water • Glucose • Salts • Alcohol • These things will pass through the stomach membrane into the _____________________ • This chemical and physical digestion changes the food bolus into a liquefied paste called _________________

  3. Stomach

  4. Cells Lining the Stomach • ___________________ • Secretes ___________________ (HCl) for two purposes • HCl destroys ________________in food • HCl converts ________________into pepsin • This enzyme digests proteins into amino acids • ___________________ • Secretes ___________________ • ___________________ • Secretes ___________________ • This protects the stomach lining so no __________occur

  5. Small Intestines • _______________________________ • Regulates the movement of foods and stomach acids from stomach to small intestines • Main function of the small intestines is to _______________ nutrients • The “small” in the small intestines refers to the ___________________, NOT the length • It is approximately ____ long in humans • Shorter in carnivores, longer in herbivores

  6. Parts of Small Intestine • There are three parts to the small intestine • ________________________ • It’s about 0.3m long • The majority of digestion occurs here • ________________________ • It’s about 2.7m long • ________________________ • It’s about 4 m long

  7. Pancreas • Its secretions play a large role in digestion • It secretes two products: • ___________________________________ • This is released into the pancreatic duct • It is a ____________solution, meaning that it will neutralize the stomach acid  pH becomes 9 (neut. HCl), deactivates pepsin • It also contains some digestive ___________________ • Amylase (converts carbs to sugars) • Lipase (converts lipids to fatty acids and glycerol) • Trypsin (converts proteins to amino acids) • ___________________________________ • This is release directly into the bloodstream • It regulates _________________________ levels

  8. Pancreas

  9. Homeostasis • ____________________________________________ ____________________________________________ • To maintain health, your body must keep certain conditions constant or within an acceptable range • Regulating blood-sugar levels is one example of this

  10. BILL NYE  • While watching Bill Nye, please try to answer all the questions on the page • There are some on the back!! • Enjoy – I am still trying to download all of Magic School Bus 

More Related