It helps us to decide which foods to eat and how much to have a healthy and balanced diet.
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What are nutrients?
They are healthy substances obtained from food.
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What are 4 groups of nutrients?
Proteins, vitamins and minerals, fats and carbohydrates
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What is one example of each group of nutrients?
student answer
15
What are 3 vital functions performed by living beings?
Nutrition, interaction and reproduction
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What is the digestive system responsible for?
digestion of the food and obtaining nutrients
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What is the respiratory system responsible for?
Carrying out gas exchange
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What is the circulatory system responsible for?
Transporting nutrients and gases
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What is the excretory system responsible for?
Removing liquid waste
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What are the 10 parts of the digestive system?
mouth, salivary glands, pharynx, oesophagus, stomach, large intestine, small intestine, liver, pancreas, anus
25
Describe ingestion
begins in the mouth,teeth break down food&mix with saliva from salivary glands making bolus which is pushed into the pharynx&down the oesophagus to the stomach
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Describe digestion
begins in stomach, gastric juices dissolve bolus making it chyme which passes into small intestines. intestinal juices and other juices turn chyme into chyle
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Where does absorption take place?
small intestines
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describe elimination
takes place in the large intestine and faeces leave the body through the anus
20
True or False: In inhalation the diaphragm relaxes and increases creating space for the lungs to contract
False. The diaphragm contracts and descends, creating space for the lungs to expand
20
True or False: In exhalation the diaphragm relaxes and rises, pushing air out of the lungs.
