Human Digestive System
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Questions and Answers

What is the process of breaking down food into simple and diffusible molecules called?

  • Absorption
  • Digestion (correct)
  • Assimilation
  • Excretion

    • Which part of our body performs the activity of breaking down food into smaller substances?

  • Liver
  • Pancreas
  • Small intestine
  • Stomach (correct)

    • What is the function of the digestive system?

  • Breaking down food for absorption (correct)
  • Production of hormones
  • Transporting nutrients to cells
  • Regulation of body temperature

    • What is the importance of digestion?

    <p>To break down complex food particles into simple molecules</p> Signup and view all the answers

    Why do organisms need food?

    <p>To provide nutrients and energy for survival</p> Signup and view all the answers

    Which organ of the digestive system comes in contact with food and secretes digestive enzymes?

    <p>Pancreas</p> Signup and view all the answers

    What is the main function of physical digestion?

    <p>Providing large surface area for enzyme action</p> Signup and view all the answers

    Which organ is part of the accessory digestive organs?

    <p>Teeth</p> Signup and view all the answers

    What is the length of the alimentary canal?

    <p>7 meters</p> Signup and view all the answers

    What is the main function of saliva in the mouth?

    <p>Starts chemical digestion of carbohydrates</p> Signup and view all the answers

    Which step of digestion involves the breakdown of large food particles into small particles?

    <p>Digestion</p> Signup and view all the answers

    What is the function of the oesophagus in the digestive system?

    <p>Transports food from mouth to stomach</p> Signup and view all the answers

    Which organ stores and releases bile?

    <p>Gall bladder</p> Signup and view all the answers

    What is the role of the pancreas in digestion?

    <p>Secretes digestive enzymes into the small intestine</p> Signup and view all the answers

    What happens during chemical digestion?

    <p>Food is reduced to a soft and flexible semisolid food called bolus</p> Signup and view all the answers

    What is the main function of physical digestion?

    <p>Mechanical breakdown of food into smaller pieces</p> Signup and view all the answers

    Study Notes

    Digestion Process

    • The process of breaking down food into simple and diffusible molecules is called digestion.
    • Digestion takes place in the digestive system.

    Digestive System

    • The digestive system is responsible for breaking down food into smaller substances.
    • Its main function is to convert food into energy and nutrients that can be absorbed and utilized by the body.

    Importance of Digestion

    • Digestion is important because it allows the body to extract nutrients and energy from food.
    • Organisms need food to obtain energy and nutrients to sustain life.

    Mouth and Digestion

    • The organ that comes in contact with food and secretes digestive enzymes is the mouth.
    • The main function of saliva in the mouth is to break down carbohydrates into simpler sugars.
    • Physical digestion, which involves the breakdown of large food particles into small particles, occurs in the mouth.

    Alimentary Canal

    • The length of the alimentary canal is approximately 9 meters.
    • The alimentary canal is the passage through which food travels during digestion.

    Esophagus

    • The function of the esophagus is to transport food from the mouth to the stomach.

    Accessory Digestive Organs

    • The liver is part of the accessory digestive organs.
    • The liver stores and releases bile, which helps in the digestion of fats.

    Pancreas

    • The role of the pancreas in digestion is to produce digestive enzymes that break down carbohydrates, proteins, and fats.
    • Chemical digestion, which involves the breakdown of food into smaller molecules, occurs in the presence of these enzymes.

    Chemical Digestion

    • During chemical digestion, enzymes break down food into smaller molecules that can be absorbed by the body.
    • Physical digestion and chemical digestion work together to break down food into nutrients and energy that can be utilized by the body.

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    Description

    Learn about the process of breaking down food into smaller substances that can be absorbed into the body cells. Understand the role of various organs in the human digestive system.

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