Principles of Organisation

• Cells


  Fundamental units of life, each designed to perform specialised functions through a process called DIFFERENTIATION
• Differentiation


  Cells specialise to perform specific functions
• Tissues


  Groups of cells with similar structures and function that work together to carry out specific jobs
• Tissues in mammals


  • Muscular tissue: Responsible for movement by contracting and relaxing
  • Glandular tissue: Produces and releases substances like enzymes and hormones
  • Epithelial tissue: Covers the surfaces of the body, such as the inside of the gut
• Organs


  Made up of different tissues that perform specific functions.
• Heart


  • Organ that contains muscular tissue for PUMPING BLOOD around the body
• Organ Systems


  Groups of ORGANS working together to perform complex functions for the organism's survival
• • Muscular tissue


  Responsible for movement by contracting and relaxing
• Glandular tissue


  Produces and releases substances like enzymes and hormones
• Epithelial tissue


  Covers the surfaces of the body, such as the inside of the gut