The Digestive System Flashcards
Give an example of physical digestion
Teeth
they tear, slice and grind the food
What are the 4 types of teeth?
-Incisors
-Canines
-Molars
-Premolars
What are incisors?
Chisel-shaped teeth at the front of the mouth used for cutting, slicing and biting
What are canines?
Long, pointed teeth that resemble fangs. They grip, stab and tear food
What are premolars?
Teeth with cusps (pointy edges)
What are molars?
Large teeth at the back of the mouth that crush and chew food
Name the parts of the digestive system
-Mouth
-Oesophagus
-Liver
-Pancreas
-Stomach
-Large intestine
-Small intestine
-Rectum
-Anus
-Salivary glands
-Gall bladder
What is the role of the mouth?
It takes in food
It physically breaks down the food using teeth and chemically breaks it down using an enzyme, amylase.
What is the role of the oesophagus?
It carries food from the mouth to the stomach
What is the role of the pancreas?
Makes enzymes
What is the role of the liver?
Produces liquid bile which helps digest fat
What is the role of the stomach?
-It churns food (Physical break down)
-Mixes Hydrochloric acid with the food (Chemical break down)
What is the role of the small intestine?
-Further digestion by enzymes
-Absorption of digested food into the blood
-Covered in villi
What is the role of the large intestine?
-Water is absorbed into the blood
-The waste that’s left is prepared for egestion
What is the role of the villi?
They provide an increased surface area to allow food to be absorbed into the bloodstream