Principles of Organisation

• What are cells?

  The basic building block of every living organism
• What are tissues?

  A group of specialised cells with a similar structure and function working together.

  • e.g. Muscular tissue contracts to bring out movement
• What is an organ?

  A collection of tissues working together to perform a specific function

  • e.g. The stomach contains glandular, muscular and epithelial tissues
• What is an organ system?

  A group of organs working together to perform a specific function

  • e.g. The digestive system contains organs such as the stomach, small intestines