The digestive system Flashcards
What’s digestion
The breakdown of large food molecules into smaller food molecules
What’s an organ
A group of tissues working together to carry out a specific function.
What’s the organ system
A group of organs working together to carry out a function
What’s catalyst
A substance which speeds up a chemical reaction without being used up itself in the reaction . Catalysts can be used again
What’s an enzyme-
A biological catalyst made from proteins
What’s diffusion
the spreading out of a liquid or gas to fill a space
What’s peristalsis
Muscular movement that only occurs in the muscles of the digestive system, pushes along the system
First stage of human digestion
Ingestion
Second stage of digestion
Digestion
Third stage of digestion
Absorption
Fourth stage of digestion
Assimilation
Fifth stage of digestion
Egestion
What’s physical digestion
The teeth and muscles in the stomach wall prepare food for chemical digestion by breaking down food into smaller pieces
What’s chemical digestion
Enzymes break food down further into small pieces amylase in saliva
The four types of teeth
Incisors, canines, premolar, molars
What is the small intestine covered in
Small folds called villi
