Biology 2.1.3 Flashcards
The Digestive System is an example of an…
Organ System.
Define ‘Digestion’:
Digestion is a Process by which Relatively Large, Insoluble, Molecules in Food are broken down into Smaller, Soluble, Molecules that can be Absorbed into the Bloodstream, & Delivered to Cells in the Body.
Functions of the Mouth/Salivary Glands in the Digestive System: (2)
-Teeth Chew Food.
-Amylase Enzymes in Saliva start Digesting Carbohydrates.
Functions of the Oesophagus in the Digestive System: (1)
Tube that Connects the Mouth to the Stomach.
Functions of the Stomach in the Digestive System: (3)
-Churns Food.
-Hydrochloric Acid Kills Bacteria.
-Protease Enzymes Digest Proteins.
Functions of the Small Intestine in the Digestive System: (1)
Absorption of Digested Food Molecules into the Bloodstream.
Functions of the Large Intestine in the Digestive System: (1)
Water is Absorbed from the remaining material. Faeces is Produced.
Functions of the Pancreas in the Digestive System: (3)
-Amylase.
-Protease.
-Lipase.
Functions of the Liver in the Digestive System: (2)
-Produces Bile.
-Produces Urea.
Functions of the Gal Bladder in the Digestive System: (1)
Stores Bile to Release into the Duodenum as required.