BIOL 204 Lab For Week 11 Digestive System
BIOL 204 Lab For Week 11 Digestive System Anatomy
Microscopic Anatomy of the GI Tract The GI tract consists of a tube that extends from the mouth to the anus. It has four tissue layers (tunics):
Another, detailed view of GI tract tunics
There are structural modifications of the tunics in various areas of the GI tract
Gross Anatomy of the GI Tract
The GI Tract: Mouth
Extrinsic Salivary Glands
Types of Permanent Teeth Each jaw has: 2 central incisors 2 lateral incisors 2 canines (eyeteeth) 4 premolars 6 molars
Internal Anatomy of a Tooth
The Esophagus
Gastroesophageal Junction Gastric pit
The Stomach
Microscopic anatomy of the stomach.
Small Intestine Gross Anatomy
Histology of the Small Intestine (Duodenum)
Intestinal Villus
The Liver Gross View of the Liver
The Duodenum of the Small Intestine Receives the Ducts of the Liver, Gall Bladder and Pancreas
Liver Microscopic Anatomy
Pancreas Gross Anatomy
Microscopic View of the Pancreas: Islet Cells: endocrine; secrete insulin and glucagon Acinar Cells: exocrine; secrete digestive enzymes
Portions of the Large Intestine
Mesenteries of the abdominal digestive organs.
1. Diaphragm 2. Liver – left lobe 3. Falciform Ligament 4. Liver right lobe 5. Stomach 6. Greater Omentum 7. Ascending Colon 8. Cecum 9. Small Intestine 10. Descending Colon 11. Sigmoid Colon
An Appendix, Unfixed
Gall Bladder on the Underside of the Liver
Liver – Gross View Serosal Surface
Human Duodenum, Unfixed
Cat Dissection 1. Parotid Gland 2. Sublingual Gland 3. Submandibular Gland 4. Esophagus 5. Tongue 6. Masseter Muscle 7. Larynx 8. Trachea
Cat Dissection Abdomen 1. 2. 3. 4. 5. 6. Diaphragm 7. Round Ligament Falciform Ligament Left Lateral Lobe of Liver Left Medial Lobe of Liver Quadrate Lobe of Liver Right Medial Lobe of Liver 8. Right Lateral Lobe of Liver 9. Gall Bladder 10. Spleen 11. Greater Omentum
Cat Abdomen – Greater Omentum Removed 1. 2. 3. 4. 5. 6. 7. Cardiac Stomach Fundic Stomach Body Pyloric Stomach Lesser Omentum Duodenum Pancreas (Ventral) 8. 9. 10. 11. 12. 13. 14. Ascending Colon Ileum Jejunum Sigmoid Colon Spleen Gastrospleenic Ligament Bladder
Small and Large Intestine Removed
1. 2. 3. 4. 5. Small Intestine THE Mesentary Ileum Cecum Ascending Colon 6. 7. 8. 9. 10. Transverse Colon Descending Colon Sigmoid Colon Mesocolon Greater Omentum
Gall Bladder and Lobes of the Liver
- Slides: 37