2.2.1 The Human Digestive System

• The esophagus transports food from the mouth to the stomach
• The liver produces bile, which aids digestion.


  True
• The gallbladder stores and concentrates bile produced by the liver
• Which organ chews and breaks down food mechanically?

  Mouth
• Nutrients are absorbed from the small intestine into the bloodstream
• What happens to absorbed nutrients during assimilation?

  Used by cells for energy
• Pepsin is an enzyme that breaks down proteins
• Stages of digestion in the correct order:

  1️⃣ Ingestion

  2️⃣ Digestion

  3️⃣ Absorption

  4️⃣ Assimilation

  5️⃣ Egestion
• The major organs of the digestive system include the mouth, esophagus, stomach, small intestine, large intestine, liver, pancreas, and gallbladder
• The esophagus transports food directly to the small intestine.

  False
• The small intestine absorbs nutrients from digested food into the bloodstream
• Match the digestive organ with its role:

  Liver ↔️ Produces bile

  Pancreas ↔️ Produces enzymes

  Gallbladder ↔️ Stores bile
• What is the role of mechanical digestion in the digestive process?

  Break food into smaller pieces
• What are the key mechanisms of physical digestion?

  Chewing and stomach churning
• Where does the absorption of nutrients primarily occur in the digestive system?

  Small intestine
• What is the role of digestive enzymes in digestion?

  Speed up chemical breakdown
• What is the main function of the digestive system?

  Breaks down food
• Match the organ with its role:

  Mouth ↔️ Chews and breaks down food mechanically

  Stomach ↔️ Stores and further breaks down food

  Small Intestine ↔️ Absorbs nutrients into bloodstream

  Large Intestine ↔️ Absorbs water and eliminates waste
• What type of enzymes does the pancreas produce to aid digestion?

  Carbohydrases, proteases, lipases
• The digestive system converts food into a form usable by the body's cells for energy, growth, and repair.


  True
• Match the stage of digestion with its description:

  Ingestion ↔️ Intake of food into the mouth

  Digestion ↔️ Breakdown of food molecules

  Absorption ↔️ Nutrients pass into bloodstream

  Egestion ↔️ Elimination of waste
• Physical digestion uses enzymes to break down food.

  False
• What is the primary role of the digestive system?

  Convert food into usable form
• What is the main function of the digestive system?

  Convert food into usable form
• What type of digestion occurs in the mouth?

  Mechanical and chemical
• Which organ stores and further breaks down food using acids and enzymes?

  Stomach
• What does the large intestine absorb from undigested food?

  Water
• The pancreas produces enzymes to digest carbohydrates, proteins, and fats.


  True
• During absorption, nutrients pass from the small intestine into the bloodstream
• Stages of digestion in order:

  1️⃣ Ingestion

  2️⃣ Digestion

  3️⃣ Absorption

  4️⃣ Assimilation

  5️⃣ Egestion
• Match the enzyme with the food it breaks down:

  Amylase ↔️ Carbohydrates

  Protease ↔️ Proteins

  Lipase ↔️ Fats
• Carbohydrates are broken down into simple sugars like glucose
• The parasympathetic nervous system stimulates digestive activity.


  True