Digestive system Flashcards
What is digestive system?
A group of organs working together to break down food.
In digestion ehat are the large molecules broken down into?
They are broken down into small molecules of nutrients which can be passed by the blood which helps out the body.
What happens in the mouth in digestion.
Food is chewed and mixed with saliva. Teeth break them down into smaller chunks.
What happens in the oesophagus
Food passes down the tube
What happens in the stomach
Food is mixed with digestive acids
What happens in the small intestine
Digestion juices from the liver and pancreas are added and digestion is completed.small molecules are added through the intestine wall into the bloodstream.
What happens in the large intestine
Only food that cannot be digested gets this far. Water passes back into the body, leaving a solid waste of undigested food called feces.
What happens in the rectum
Feces are stored jntil they leave the body.
What ahppens in the anus
Feces are passed out through the body
What is the order in the digestive system?
Mouth Oesophagus Stomach Small intestine Large intestine Rectum Anus
Where are the small molecules of nutrients transported around the body?
Bloodstream
What is the small intestine wall covered in?
Villi
What do villi do?
They give a big surface area and contain blood capillaries.
