IGCSEBiologyCambridge (CIE)Revision Notes7. Human NutritionHuman Diet & DigestionThe Stomach

The Stomach (Cambridge (CIE) IGCSE Biology): Revision Note

Exam code: 0610 & 0970

Lára Marie McIvor

Written by: Lára Marie McIvor

Reviewed by: Jenna Quinn

Updated on

The stomach

  • The stomach is one of a number of organs that make up the digestive system

  • The role of the digestive system is to break down large insoluble molecules into smaller, soluble food molecules to provide the body with nutrients

  • The stomach lining contains muscles which contract to physically squeeze and mix the food with the strong digestive juices that are present

    • This is known as "stomach churning"

  • Food is digested within the stomach for several hours

Diagram of the stomach showing lumen and layers of smooth muscle, glandular and epithelial tissues with notes on churning, secretion and protein digestion.
Three types of tissue found in the stomach are muscular, epithelial and glandular tissue

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Author
Reviewer
Lára Marie McIvor

Author: Lára Marie McIvor

Expertise: Content Creator

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.

Jenna Quinn

Reviewer: Jenna Quinn

Expertise: Content Creator

Jenna studied at Cardiff University before training to become a science teacher at the University of Bath specialising in Biology (although she loves teaching all three sciences at GCSE level!). Teaching is her passion, and with 10 years experience teaching across a wide range of specifications – from GCSE and A Level Biology in the UK to IGCSE and IB Biology internationally – she knows what is required to pass those Biology exams.