Chapter 4 / 7 short lessons
Nutrition in humans
Follow food through digestion, absorption and assimilation, and explain the work of the intestine and liver.
G3 Pure Biology / K325 / 2027 syllabus
What do you think?
Bile makes large fat droplets smaller. Has it chemically digested the fat?
Lessons
0 of 7 marked as readThe journey through the digestive system
Locate the main digestive organs and distinguish ingestion, digestion, absorption, assimilation and egestion.
About 6 minMoving food by peristalsis
Explain how coordinated waves of muscle contraction mix and propel food.
About 4 minDigestive enzymes and bile
Match digestive enzymes to their substrates and products, and distinguish digestion from emulsification.
About 6 minHow a villus absorbs nutrients
Link villus structure to efficient absorption and distinguish blood and lymph routes.
About 6 minFrom the intestine to the liver
Trace absorbed nutrients through the hepatic portal vein and explain assimilation.
About 5 minThe liver processes more than glucose
Explain the liver's roles in glucose storage, fat digestion, amino acid metabolism, urea formation and substance breakdown.
About 6 minAlcohol, the brain and the liver
Connect alcohol's effects on the brain and liver to immediate, long-term and social consequences.
About 5 minWhat you will be able to do
- Explain the roles of digestive organs and enzymes.
- Connect villus structure to nutrient absorption.
- Trace absorbed nutrients to the liver and explain their uses.
Spaced review
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