Human Organ Systems

• MRS GREN


  • M = Movement
  • R = Respiration
  • S = Sensitivity
  • G = Growth
  • R = Reproduction
  • E = Excretion
  • N = Nutrition
• Living things are able to move about. Animals move from place to place. Plants move by responding to light.
• Living things need energy to carry out the functions that keep them alive. Respiration is the process by which food is turned into energy.
• Living things notice and react to changes in their surroundings. They can respond to light, heat, sound, taste, sight or touch.
• Living things grow, increasing in size and complexity.
• Living things produce offspring. Reproduction continues the survival of each species.
• Living things have to get rid of unwanted waste products.
• Living things need to take in food so that respiration can occur. Nutrients in food help to build, maintain and repair the organism.
• Organ


  A part of the body that has a specific function
• The human body has many organs that work together and help keep it alive by carrying out the life processes!
• Organ system


  Groups of organs that work together to perform a specific function
• The different organs in a system are linked together by tubes or vessels.
• Human organ systems


  • Digestive system
  • Nervous system
  • Circulatory system
  • Respiratory system
• Digestive system


  Responsible for breaking down food into nutrient particles that the body can use
• Nervous system


  Helps different parts of the body communicate with each other
• Circulatory system


  Transports substances all over the body in the blood
• Respiratory system


  Provides energy for the body