IGCSEBiologyCambridge (CIE)Revision Notes7. Human NutritionHuman Diet & DigestionAbsorption

Absorption (Cambridge (CIE) IGCSE Biology)

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Lára Marie McIvor

Written by: Lára Marie McIvor

Reviewed by: Lucy Kirkham

Absorbing Nutrients

  • Absorption is the movement of digested food molecules from the digestive system into the blood (glucose and amino acids) and lymph (fatty acids and glycerol)

  • Nutrients are absorbed in the small intestine

Absorbing Water

  • Water is absorbed in both the small intestine and the colon, but most absorption of water (around 80%) happens in the small intestine

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    Author
    Reviewer
    Lára Marie McIvor

    Author: Lára Marie McIvor

    Expertise: Biology Lead

    Lára graduated from Oxford University in Biological Sciences and has now been a science tutor working in the UK for several years. Lára has a particular interest in the area of infectious disease and epidemiology, and enjoys creating original educational materials that develop confidence and facilitate learning.

    Lucy Kirkham

    Author: Lucy Kirkham

    Expertise: Head of STEM

    Lucy has been a passionate Maths teacher for over 12 years, teaching maths across the UK and abroad helping to engage, interest and develop confidence in the subject at all levels.Working as a Head of Department and then Director of Maths, Lucy has advised schools and academy trusts in both Scotland and the East Midlands, where her role was to support and coach teachers to improve Maths teaching for all.