Lecture 10

  1. Specialization in the digestive systems occur when...
    The Digestive tract has a separate mouth & anus
  2. [BLANK] have the most primitive digestive tract
    [BLANK] have the most primitive digestive tract
  3. Describe The Digestive Tract of a Nematode
    Tubular gut lined by an epithelial membrane
  4. (T/F) More complex animals have a digestive tract specialized in different regions
    TRUE
  5. Common features shared by the digestive tract of most organisms
    Mouth to anus with intestine that does the absorbing in the middle
  6. Define Ingestion
    The intake of food
  7. Define Digestion
    Breaking food down to its component parts
  8. The component parts of food
    • 1. Nucleic acid
    • 2. Nutrients
    • 3. Lipids
    • 4. Monosaccharides
  9. 4 steps of the Passage of food
    • 1. Ingestion
    • 2. Chemical digestion
    • 3. Absorption
    • 4. Excretion of waste
  10. How does absorption happen?
    Products pass through the gut's epithelial lining into the blood
  11. [BLANK] liberate the subunit molecules to catalyze chemical digestion
    Hydrolysis reaction
  12. Major Organs in the vertebrate digestive systems
    • 1. Mouth & pharynx
    • 2. Esophagus
    • 3. Stomach
    • 4. Small intestine
    • 5. Large intenstine
    • 6. Cloaca & rectum
  13. Function of Mouth & Pharynx
    Food entry
  14. Function of Esophagus
    1st place digestion happens, delivers food to the stomach
  15. Function of stomach
    Preliminary digestion
  16. Function of Small intestine
    Digestion & 1st place absorption happens
  17. Function of Large intestine
    Absorption of water and minerals
  18. Function of Cloaca & Rectum
    Expel waste
  19. List Accessory organs
    • 1. Liver
    • 2. Gallbladder
    • 3. Pancreas
  20. Function of Liver
    Produces bile
  21. Function of Gallbladder
    Stores & concentrates bile
  22. Function of the Pancreas
    Produces pancreatic juice & acts as a buffer for digestive enzymes and bicarbonate
  23. 4 layers of the Gastrointestinal tract
    • 1. Mucosa: Epithelium
    • 2. Submcosa: Connective tissue
    • 3. Muscularis: Smooth muscle
    • 4. Serosa: Epithelium
  24. (T/F) The Gastrointestinal tract is not layered
    FALSE
Author
aokeiyi
ID
334846
Card Set
Lecture 10
Description
The Digestive System
Updated