The Human Digestive system
- Created by: charley
- Created on: 13-08-18 11:22
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- The Buccal Cavity
- Oesophegus
- Stomach
- Duodenum
- Illeum
- Where absorption occurs
- Large Intestine
- Colon
- Water Absorbtion
- Mineral Absortion
- Caecum
- Appendix
- Rectum
- Mutualistic Microorganisms
- Vitamin K
- Folic Acid
- Colon
- Liver
- Bile Salts
- Amphipathic
- Emulsify lipids
- Lowers surface tension
- Increases surface area
- Bile Pigments
- Bile Salts
- Pancreas
- Pancreatic Juice
- Secreted by islet cells
- Enzymes
- Endopeptidases
- Hydrolyse protein to peptides
- Trypsinogen
- Inactive protease
- Enterokinase
- Converts trypsinogen to trypsin
- Amylase
- Lipase
- Endopeptidases
- Sodium Hydrogen Carbonate
- Raises the pH
- Pancreatic Juice
- Illeum
- Has two sphincters, cardiac and pyloric
- Gastric juice, secreted from gastric pits, contains peptidases, HCl and mucus
- HCl is secreted by oxyntic cells
- Mucus is secreted by goblet cells
- Pepsinogen is secreted by zymogen/chief cells
- Duodenum
- Carries food to the stomach
- Stomach
- Mechanical Digestion
- Saliva contains amalase, ions and mucus
- Ions make the pH slightly alkaline
- Mucus acts as a lubricant
- Oesophegus
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