Cell organisation

• What is the basic building block of all living organisms?

  Cells
• What is the process by which cells become specialized called?

  Differentiation
• During what stage does differentiation occur in multicellular organisms?

  During development
• How are specialized cells organized in multicellular organisms?

  • Specialized cells form tissues
  • Tissues form organs
  • Organs form organ systems
• What is a tissue?

  A group of similar cells
• What is the function of muscular tissue?

  Contracts to move attached structures
• What is an organ?

  A group of different tissues
• What is the function of the stomach?

  Churns and mixes food
• What tissues make up the stomach?

  Muscular, glandular, and epithelial tissues
• What is an organ system?

  • A group of organs working together
  • Performs a particular function
• What is the function of the digestive system?

  Breaks down food and exchanges materials
• What organs are part of the digestive system?

  Pancreas, stomach, liver, small intestine
• What does the pancreas produce?

  Digestive enzymes and hormones
• What is the role of the liver in digestion?

  Produces bile
• Where does most food digestion occur?

  In the small intestine
• What happens in the large intestine?

  Water is absorbed from undigested food
• How do organ systems work together?

  • Perform functions for the organism
  • Interact with the environment
• What is the function of digestive enzymes?

  To control chemical reactions
• What is the role of bile in digestion?

  Helps digest fats
• What is the relationship between tissues, organs, and organ systems?

  Tissues form organs, which form organ systems
• How do the functions of the stomach and small intestine differ?

  The stomach churns food; small intestine absorbs nutrients
• How does the digestive system interact with the environment?

  By taking in nutrients and releasing substances