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  • 1. Digestive Organs
  • 2. Organs that make up the digestive system
    • Oral Cavity
    • Pharynx
    • Esophagus
    • Stomach
    • Small Intestine
    • Large Intestine
    • Anus
  • 3. Functions of the Digestive System
    • Ingestion
    • Digestion (Mechanical digestion, Chemical digestion)
    • Peristalsis
    • Secretion
    • Absorption
    • Elimination
  • 4. A great youtube video on Digestion
    • http://www.youtube.com/watch?v=Z7xKYNz9AS0
  • 5. Oral Cavity
  • 6. Oral Cavity
    • The oral cavity is the entrance to the GI tract.
    • The epithelial lining of the oral cavity is a nonkeratinized stratified squamous epithelium.
    • The oral cavity has two distinct regions: The Vestibule and The Oral Cavity Proper
  • 7. Pharynx
  • 8. Pharynx
    • The pharynx is the common space used by both the respiratory and digestive systems.
    • The pharynx is divided into three regions: Nasopharynx, Oropharynx, Laryngopharynx
    • Three skeletal muscle pairs, called the superior, middle, and inferior pharyngeal constrictors, form the wall of the pharynx.
  • 9. Esophagus
  • 10. Esophagus
    • The esophagus is a tubular passageway for swallowing materials being conducted from the pharynx to the stomach.
    • The inferior region of the esophagus connects to the stomach by passing through an opening in the diaphragm called the esophageal hiatus.
    • In the adult human, the esophagus is about 25 centimeters long, and most of its length is within the thorax, directly anterior to the vertebral bodies.
  • 11. Stomach, or hot air balloon? NOT a good life style choice
  • 12. Stomach
  • 13. Stomach
    • The stomach is a muscular, J-shaped sac the occupies the left upper quadrant of the abdomen, immediately inferior to the diaphragm.
    • The stomach is composed of four regions: Cardia, Fundus, Body and Pyloris.
    • The stomach also includes: Greater Curvature, Lesser Curvature and Gastric Folds.
  • 14. Large Intestine
  • 15. Large Intestine
    • Also known as the “large bowel”
    • It is split into 5 sections:
    • Ascending Colon
    • Transverse Colon
    • Descending Colon
    • Rectum
    • Anal Canal
  • 16.  
  • 17. Small Intestine
    • The small intestine is also called the small bowel.
    • The small intestine is composed of three regions: Duodenum, Jejunum, and Ileum.
    • The duodenum is the first segment of the small intestine.
    • The jejunum is the middle region.
    • The ileum is the last region.
  • 18. Anus
  • 19. Anus At the base of the anal canal are the internal and external anal sphincters, which close off the opening to the anal canal and open during defecation. .
  • 20. THE END