Digestive System

By the end of this lesson, the learner should be able to:

• Describe the digestive system
• Identify the parts of the digestive system
• Describe the functions of the different parts of the digestive system

Digestion:

• The mechanical and chemical breakdown of foods into forms that cell membranes can absorb:
  • Mechanical digestion breaks down large pieces of food into smaller ones, but does not change chemical composition
  • Chemical digestion uses enzymes to break down food particles, by changing them into simpler chemicals

Digestive System:

• Organs of the digestive system carry out mechanical and chemical digestion, as well as ingestion, propulsion, absorption, and defecation
• The digestive system consists of the alimentary canal and accessory organs

Organs of the Digestive System

The digestive system consists of 2 portions:

• Alimentary canal:
  • The food passageway
  • Consists of organs that extend from the mouth to the anus
  • Mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anal canal
  • Muscular tube, about 8 m long
• Accessory organs:
  • Consists of organs that empty secretions into alimentary canal
  • Food does not pass through them
  • Salivary glands, liver, gallbladder, pancreas

By the end of this lesson, the learner should be able to:

• Describe the digestive system
• Identify the parts of the digestive system
• Describe the functions of the different parts of the digestive system

Digestion:

• The mechanical and chemical breakdown of foods into forms that cell membranes can absorb:
  • Mechanical digestion breaks down large pieces of food into smaller ones, but does not change chemical composition
  • Chemical digestion uses enzymes to break down food particles, by changing them into simpler chemicals

Digestive System:

• Organs of the digestive system carry out mechanical and chemical digestion, as well as ingestion, propulsion, absorption, and defecation
• The digestive system consists of the alimentary canal and accessory organs

Organs of the Digestive System

The digestive system consists of 2 portions:

• Alimentary canal:
  • The food passageway
  • Consists of organs that extend from the mouth to the anus
  • Mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anal canal
  • Muscular tube, about 8 m long
• Accessory organs:
  • Consists of organs that empty secretions into alimentary canal
  • Food does not pass through them
  • Salivary glands, liver, gallbladder, pancreas

By the end of this lesson, the learner should be able to:

• Describe the digestive system
• Identify the parts of the digestive system
• Describe the functions of the different parts of the digestive system

Digestion:

• The mechanical and chemical breakdown of foods into forms that cell membranes can absorb:
  • Mechanical digestion breaks down large pieces of food into smaller ones, but does not change chemical composition
  • Chemical digestion uses enzymes to break down food particles, by changing them into simpler chemicals

Digestive System:

• Organs of the digestive system carry out mechanical and chemical digestion, as well as ingestion, propulsion, absorption, and defecation
• The digestive system consists of the alimentary canal and accessory organs

Organs of the Digestive System

The digestive system consists of 2 portions:

• Alimentary canal:
  • The food passageway
  • Consists of organs that extend from the mouth to the anus
  • Mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anal canal
  • Muscular tube, about 8 m long
• Accessory organs:
  • Consists of organs that empty secretions into alimentary canal
  • Food does not pass through them
  • Salivary glands, liver, gallbladder, pancreas

By the end of this lesson, the learner should be able to:

• Describe the digestive system
• Identify the parts of the digestive system
• Describe the functions of the different parts of the digestive system

Digestion:

• The mechanical and chemical breakdown of foods into forms that cell membranes can absorb:
  • Mechanical digestion breaks down large pieces of food into smaller ones, but does not change chemical composition
  • Chemical digestion uses enzymes to break down food particles, by changing them into simpler chemicals

Digestive System:

• Organs of the digestive system carry out mechanical and chemical digestion, as well as ingestion, propulsion, absorption, and defecation
• The digestive system consists of the alimentary canal and accessory organs

Organs of the Digestive System

The digestive system consists of 2 portions:

• Alimentary canal:
  • The food passageway
  • Consists of organs that extend from the mouth to the anus
  • Mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anal canal
  • Muscular tube, about 8 m long
• Accessory organs:
  • Consists of organs that empty secretions into alimentary canal
  • Food does not pass through them
  • Salivary glands, liver, gallbladder, pancreas