Stomach

• What is the stomach classified as in the digestive system?


  An organ
• What are the main roles of the stomach?


  Churning food, producing protease enzymes, and producing stomach acid
• What type of enzymes does the stomach produce?


  Protease enzymes
• What do protease enzymes, such as pepsin, do?


  They digest proteins into amino acids
• What is produced in the stomach besides protease enzymes?


  Stomach acid
• What are the different levels of organization in the stomach?


  • Cells: Specialized cells secrete protease enzymes, stomach acid, or mucus
  • Tissues:
  • Glandular tissue secretes substances
  • Muscle tissue contracts to churn food
  • Epithelial tissue lines the stomach
  • Organs: The stomach is a group of tissues working together
  • Organ systems: The stomach works with other organs in the digestive system
• What type of tissue secretes substances in the stomach?


  Glandular tissue
• What is the function of muscle tissue in the stomach?


  It allows the stomach to churn food
• What type of tissue lines the stomach?


  Epithelial tissue
• How does the stomach function as an organ?


  It is a group of tissues that work together to carry out part of the digestion process
• What role does the stomach play in the digestive system?


  It works with a series of other organs to digest food
• What types of tissues are found in the stomach and what are their roles?

  Muscular, epithelial, and glandular tissues work together for digestion