Structural organisation of the body

• Cells

  • Basic unit of the body
  • Cells are specified to carry out different functions
• Tissues

  • Cells with similar specialisations that carry out a common function
  • e.g. muscle tissue
• Organs

  • Different types of tissues work together as organs
  • Organs are usually made up of 2 or more tissues
  • e.g. the heart
• Systems

  • A group of organs working together for a common purpose
  • e.g. digestive system
• Organism

  • An individual is composed of a number of systems that are co-ordinated to maintain life