1.3.1 The Digestive System

• The digestive system eliminates undigested waste
• The large intestine absorbs water from undigested material.


  True
• The digestive system works together to break down and absorb food.


  True
• Amylase breaks down carbohydrates, while protease breaks down proteins.
• The stomach is lined with glands that produce gastric juices.


  True
• The large intestine is wider and shorter than the small intestine.


  True
• Mechanical digestion involves chewing, while chemical digestion uses enzymes to break down food.
• The large intestine absorbs water from undigested material, forming solid waste.
• What is the primary function of the digestive system?

  Breakdown and absorption of food
• Match the digestive organ with its role:

  Mouth ↔️ Ingests food, starts digestion

  Esophagus ↔️ Transports food to the stomach

  Stomach ↔️ Stores and digests food

  Small Intestine ↔️ Absorbs most nutrients

  Large Intestine ↔️ Absorbs water, forms waste
• What is the role of the esophagus in the digestive system?

  Transports food to the stomach
• Stages of the digestive process in order:

  1️⃣ Ingestion

  2️⃣ Digestion

  3️⃣ Absorption

  4️⃣ Assimilation

  5️⃣ Elimination
• Where does nutrient absorption primarily occur in the digestive system?

  Small intestine
• Arrange the organs of the digestive system in the order through which food passes:

  1️⃣ Mouth

  2️⃣ Esophagus

  3️⃣ Stomach

  4️⃣ Small Intestine

  5️⃣ Large Intestine
• The mouth contains teeth and saliva to begin digestion.
• Match the digestive enzyme with its primary role:

  Amylase ↔️ Breaks down carbohydrates

  Protease ↔️ Breaks down proteins

  Lipase ↔️ Breaks down fats
• The elimination of waste is crucial for maintaining the body's balance.


  True
• The majority of nutrients are absorbed in the small intestine.
• The stomach stores and further digests food using acids and enzymes.
• What is mechanical digestion in the stomach?

  Churning of food
• The esophagus uses peristalsis to transport food to the stomach.

  True
• The small intestine is a long tube with villi for absorption.
• Order the stages of the digestive process:

  1️⃣ Ingestion

  2️⃣ Digestion

  3️⃣ Absorption

  4️⃣ Assimilation

  5️⃣ Elimination
• The small intestine has villi to increase the surface area for absorption.