• Digestive system analogy

• The open food loop
  • General name
    • eating , drinking
  • entry trough a crescent shaped structure on face called as.
    • Mouth , oral
    • Leading in to series of cavities and tubes , segments of which are divided in to either
      • called oral cavity
        • Teeth
        • Tongue
        • Salivary gland
          • Parotid glands
          • Submandibular glands
          • Sublingual glands
      • PHARYNX
      • Oesophagus
      • Stomach
      • Small intestine
        • Duodenum
        • Jejunum
        • Ileum
      • Large intestine
        • Cecum
        • Ascending colon
        • Transverse colon
        • Descending colon
      • Sigmoid colon
      • Rectum
      • Anal canal
  • outside structures connected through tubes concerned only with secretion
    • LIVER
    • PANCREAS
    • Gallbladder
    • Mesentery

System to absorb nutrients and remove waste via the gastrointestinal tract, including the mouth, esophagus, stomach and intestines. Eliminates waste from the body.

• Mouth
  • Teeth
  • Tongue
• Salivary gland
  • Parotid glands
  • Submandibular glands
  • Sublingual glands

• Duodenum
• Jejunum
• Ileum
• • Cecum
  • Ascending colon
  • Transverse colon
  • Descending colon
• Sigmoid colon
• Gallbladder
• Mesentery
• Anal canal