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2nd Year. Preswex.

Digestive system, Circulatory system. Chapter 8.2 8.3

TermDefinition
Ingestion Taking food into the mouth
Digestion Break down of food into smaller pieces
absorbtion food molecules moving into the blood
Assimilation food used by the body to make new cells
egestion undigested food passed of body as faeces
amylase enzyme that breaks down starch
canine teeth used for ripping and tearing food
incisor teeth used to cut food
molar teeth used to grind food
saliva is made here salivary glands
physical digestion muscles in stomach, the teeth and the tongue breaking food into smaller pieces
chemical digedtion breaking down for food by enzymes and digestive juices.
The reason we need food to be digested make it small enough to be absorbed into the blood.
We need food(glucose) and oxygen for respiration to happen in our cells
In the small intestine food is broken down by enzymes and absorbed into the blood
In the stomach food is broken down churning (physical) and by hydrochloric acid (chemical)
the liver brakes down toxic substances, makes bile, heats the blood to 37 degrees Celsius.
pancreas makes enzymes like amylase and lipase to be used in the small intestine
the large intestine takes water back into the blood
Good bacteria in large intestion improve our immune system and make B and K vitamins for us.
Relationship between humans and good bacteria in large intestine is called A symbiotic relationship