Digestive System Flashcards
What does the pharynx do?
Swallows
What does the liver do?
Breaks down and builds up many biological molecules. Stores vitamins and iron. Destroys old blood cells. Destroys poisons. Bile aids in digestion.
What does the gallbladder do?
Stores and concentrates bile
What does small intestine do?
Completes digestion. Mucus protects gut wall. Absorbs nutrients, most water. Peptidase digests proteins. Sucrases digest sugars. Amylase digests polysaccharides
What does the anus do?
Opening for elimination of feces
What do the salivary glands do?
Saliva moistens and lubricates food. Amylase digests polysaccharides
What does the oesophagus do?
Transports food
What does the stomach do?
Stores and churns food. Pepsin digests protein HCI activates enzymes, break up food, kills germs. Mucus protects stomach wall. Limited absorption
What does the pancreas do?
Hormones regulate blood glucose levels. Bicarbonates neutralise stomach acid. Trypsin and chymotrypsin digests polysaccharides. Lipase digests lipids
What does the large intestine do?
Reasorbs some water and ions. Forms and stores feces
What does the rectum do?
Stores and expels feces
What are enzymes?
a special group of proteins that speed up reactions
Lipids enzyme
Lipase
Proteins enzyme
Protease
Carbohydrates enzyme
Carbohdrase
