Section outline

    • Digestion:

      Digestion is the process of breaking down complex nutrients into simpler form that can be absorbed & used by the body.

      Explanation:
      1. The nutrients (components of food) such as carbohydrates, fats & proteins are complex substances.
      2. These complex substances cannot be utilized or absorbed directly by the body.
      3. So they are broken down into simpler substances. 
      Steps in digestion:

      Steps

    • Digestive system in humans:

      The digestive tract (or the alimentary canal) &  accessory organs (secretory organs) together form the digestive system.

      List of the organs in the digestive system:

      digestive system

      Functioning of the digestive system:
      1. The digestive system has many compartments that form the alimentary canal.
      2. Food passes gradually through these compartments & food components get digested.
      3. Digestive juices are secreted by the inner walls of the stomach & small intestine and various associated glands like the salivary glands, live & pancreas.
      4. These digestive juices convert complex food components into simple substances.
      5. This is the overview of the functioning of the digestive system.

      Let's study in detail the digestive system & the journey of food through this system. 

    • Diagram of digestive system