The Digestive System Flashcards
What is ingestion?
Ingestion is the intake of food
What is digestion?
Digestion is the breakdown of food into nutrients
What is absorption?
Absorption is when nutrients are absorbed into the blood system
What is egestion?
Egestion is the waste material of food being removed from the body
Name 5 food types
Carbohydrates, fats, protein, vitamins and minerals
What is a deficiency disease and give one example
Deficiency diseases are caused by a lack of certain food. E.g scurvy
What is physical digestion?
Physical digestion is the teeth cutting and chewing mechanically on food.
What is chemical digestion?
Chemical digestion is the breaking down of food in the saliva containing enzymes.
Oesophagus
Muscular tube that forces food down to stomach by peristalsis.
Stomach
Muscular bag that traps food and breaks down though physical and chemical digestion
Small intestine
Where nutrients are absorbed into the bloodstream
Liver
Produces fat breaking bile + produces heat
Pancreas
Helps to digest starch
Large intestine
Reabsorbs water from food and put it in bloodstream