Zusammenfassung der Ressource
Digestive System.
- Major parts of the digestive system.
- The Oesophagus.
- 1. Carries food from the mouth to the Stomach.
- 2. Therefore it is adapted for
transport rather than Digestion.
- 3. It is made up of a thick cell wall.
- The Stomach.
- 1. It is a muscular sac which
produces enzymes from its inner
layer. It has a very acidic Ph in the
stomach for digestion.
- 2. Its role is to store and to digest food,
ESPECIALLY PROTEINS.
- It uses mucus as a physical barrier for self digestion.
- The Salivary Amylase stops working when the HCl in the stomach starts to work.
- Small intestine
- The pancreas Secretes:
- -PANCREATIC JUICE
- --PANCREATIC AMYLASE
- -PANCREATIC MALTASE
- It is used for absorption of
soluble molecules into the blood.
- SURFACE AREA
- It is very long
- On the wall of the small intestine there are small
projections called VILLI. This increases Surface area.
- There are increased surface area due to MICROVILLI on top of the ViILLI
- The cell wall is ONE CELL THICK meaning that
there is a short diffusion pathway.
- Enter text here