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8 Cards in this Set
- Front
- Back
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What are the five nutrients in a balanced diet? |
Proteins Carbohydrates Vitamins Minerals and Lipids(Fat) |
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What is each useful for |
P=Growth+repair C=Energy V=For a healthy body M= Health(hemoglobin and strong bones) L=Energy +insulation |
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What affects how much energy a person need each day? |
Weight and activity |
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What are the affects of obesity and starvation? |
High blood pressure and heart disease Slow growth, more likely fore infections and irregular periods |
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What are the main organs in digestion and function?(8) |
Mouth-digestion begins -mechanical Oesophagus-connects the mouth and stomach Stomach-muscular tissue churn food and hydrochloric acid kills harmful bacteria and low pH Liver-Produces bile high pH for enzymes in small intestine Pancreas- Produces enzymes Small intestine-food absorbed through gut wall into bloodstream Large intestine-Water is absorbed Rectum-undigested food is absorbed as faeces and comes out of the anus (egestion) |
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What are the adaptions of the villi? |
Thin outer layer of cells Good blood supply large surface area |
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What are the different enzymes, where are they found and what is the end product? |
Protease- breaks down protein into amino acids- stomach,small intestine and the pancreas Lispase- breaks down lipids into fatty acids and glycerol- small intestine and the pancreas Amylase- breaks down starch into maltose and glucose- mouth small intestine and pacreas |
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What are the functions of the skeleton |
protection,support,movement and producing red blood cells |
