BRAINCAKEOrgan Systems
An organ system is a group of organs that work together to carry out a major function in the body. It is the highest level of organisation below the whole organism.
Example: the digestive system
The digestive system breaks down large, insoluble food molecules into small, soluble ones and absorbs them into the blood. Its organs each have a role:
• mouth and oesophagus: take in food and move it to the stomach
• stomach: stores food, mixes it and begins protein digestion
• pancreas: secretes digestive enzymes into the small intestine
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Key terms in this lesson
- emulsification
- The breakdown of large fat droplets into many smaller droplets, increasing their surface area, without chemical change.
More in Eukaryotic Cells
- Lysosomes
- Plant Cells
- Plant Cell Walls
- Plasmodesmata
- Permanent Vacuole
- Chloroplasts
- Organisation of Cells
- Epithelial Cells
All 30 lessons in Eukaryotic Cells · All Edexcel AS-level Biology topics