The Digestive System Flashcards
What is a tissue?
A group of cells with similar structure and function working together e.g. muscle glands and epithelial tissue.
What is an organ?
A group of different tissues that work together to perform a certain function e.g. stomach, muscular tissue-contracts to move food, glandular tissue-makes digestive juices, epithelial tissue-lines the stomach
What is an organ system?
A group of organs working together to perform a certain function e.g. digestive system
What breaks down starch?
Amylase
What breaks down proteins?
Protease
What breaks down lipids?
Lipase
What is bile?
Produced in the liver stored in the gall bladder.
It neutralises the stomach acid.
It emulsifies fats e.g. breaks it into tiny droplets to speed up digestion.
What do salivary glands do?
Produce amylase (digestive juices)
What does the mouth do?
mechanical breakdown of food to increase surface area for enzymes
What does the stomach do?
It pummels the food
produces pepsin (protease)
produces hydrochloric acid to kill bacteria and give correct pH for protease or pepsin.
What does the liver do?
Where bile is produced
What does the gall bladder do?
Stores bile
What does the pancreas do?
Produces protease, amylase and lipase
What does the small intestine do?
Produces protease, amylase and lipase
absorbs digested food into the blood
What does the large intestine do?
Absorbs water and excretes waste
