Sample
Summaries after sample
,Sample
Summaries after sample
,Sample
Summaries after sample
, Healthy diet
The alimentary canal
Components of a healthy diet
and digestion
• Diet provides the body with necessary
Digestion nutrients.
• Mechanical digestion: • 4 main nutrient groups - carbohydrates,
- Chewing in the mouth. proteins, fats and oils, vitamins, and minerals.
- Churning of food by muscles in the stomach. • Nutrients are grouped based on their roles -
energy producers, body builders, and
• Chemical digestion: protectors.
- Food chemically broken down by digestive T5: Digestive • Food pyramid - illustrates the recommended
Sampleenzymes. daily servings of each food type.
- Begins in the mouth – saliva. system
- Continues in the stomach – hydrochloric acid.
What is an unbalanced diet?
Summaries after sample
• Eating too little:
Absorption - Starvation - not receiving enough food over long
periods.
• Mouth – ingestion occurs, and food is chewed and
- Leads to lack of energy, and difficulty fighting
broken down by saliva.
diseases.
• Oesophagus – food is pushed from the mouth to the
stomach in a wave motion – peristalsis.
• Eating too much:
• Stomach – food stays in the stomach for 4-6 hrs and
- Body stores extra food as fat – causes obesity.
mixes with digestive juices.
- Causes fatty layer to form inside arteries –
• Small intestine – digestion is completed, and food is
blocks blood flow.
taken up through the intestine lining – absorption.
• Large intestine – undigested food passes through as
waste and most water from the waste is reabsorbed.
• Rectum – final part of the large intestine that ends in
the anus.
• Anus – faeces leave the body – egestion.
T1-T5 Via Afrika Copyright © www.summariessa.co.za (DO NOT COPY)
GR9
NS Mind Map
Summaries after sample
,Sample
Summaries after sample
,Sample
Summaries after sample
, Healthy diet
The alimentary canal
Components of a healthy diet
and digestion
• Diet provides the body with necessary
Digestion nutrients.
• Mechanical digestion: • 4 main nutrient groups - carbohydrates,
- Chewing in the mouth. proteins, fats and oils, vitamins, and minerals.
- Churning of food by muscles in the stomach. • Nutrients are grouped based on their roles -
energy producers, body builders, and
• Chemical digestion: protectors.
- Food chemically broken down by digestive T5: Digestive • Food pyramid - illustrates the recommended
Sampleenzymes. daily servings of each food type.
- Begins in the mouth – saliva. system
- Continues in the stomach – hydrochloric acid.
What is an unbalanced diet?
Summaries after sample
• Eating too little:
Absorption - Starvation - not receiving enough food over long
periods.
• Mouth – ingestion occurs, and food is chewed and
- Leads to lack of energy, and difficulty fighting
broken down by saliva.
diseases.
• Oesophagus – food is pushed from the mouth to the
stomach in a wave motion – peristalsis.
• Eating too much:
• Stomach – food stays in the stomach for 4-6 hrs and
- Body stores extra food as fat – causes obesity.
mixes with digestive juices.
- Causes fatty layer to form inside arteries –
• Small intestine – digestion is completed, and food is
blocks blood flow.
taken up through the intestine lining – absorption.
• Large intestine – undigested food passes through as
waste and most water from the waste is reabsorbed.
• Rectum – final part of the large intestine that ends in
the anus.
• Anus – faeces leave the body – egestion.
T1-T5 Via Afrika Copyright © www.summariessa.co.za (DO NOT COPY)
GR9
NS Mind Map
