Digestive System

Digestive System

1. Functions

   • 1. Ingestion
   • 2. Grinding
   • 3. Digestion
   • 4. Absorption
   • 5. Elimination

2. Parts

   • Accessory Glands
     • Salivary
       • Parotid
       • Mandibular
       • Submandibular
     • Liver
       • 1. filter blood
       • 2. secrete bile
         • 3. detoxify
       • 4. store fatty acids
       • 5. convert sugar
       • 6. regulate blood volume
     • Pancreas
       • Alpha Cells
         • Glucagons
       • Beta Cells
         • Insulin
       • Delta Cells
         • Somatostatin
   • Pharynx
     • Passageway for Air
     • Passageway for Food
   • Tonsils
     • Palatine
     • Lingual
     • Pharyngeal
   • Taste Buds
     • Filiform
     • Fungiform
     • Foliate
     • Vallate

3. The Tooth

   • Crown
   • Neck
   • Root

4. Dental Formulas

   • Adult Dog
     • 2{I3/3, C 1/1,P 4/4, M 2/3}
   • Adult Cat
     • 2{13/3,C 1/1, P 3/2, M 1/1}

5. Simple Stomach

   • Gastric Pits
   • Lamina Propia
     • Cardiac Glands
       • Produce Mucus
     • Pyloric Glands
       • Produce Gastrin
         • A hormone that stimulates HCL
     • Fundic Glands
       • Parietal Cells
         • produce HCL
       • Chief Cells
         • Produce pepsinogen
           • split by HCL to produce pepsin
             • main part of gastric juices
         • Produce Rennin

6. Ruminant Stomach

   • Rumen
     • Reticulum
       • Omasum
         • Abomasum
           • True Stomach
         • Book stomach
       • Honeycomb
     • fermenting vat

7. Crypts of Leiberkuhn

   • Located between villi
   • Secretes Enterokinase
     • Activates Trypsinogen: breaks down proteins
     • Activates Amylase: breaks down starches
   • Brunner's Gland
     • secrete mucus
   • Peyer's Patch
     • lymph nodes in ileum
   • Auerbach Plexus
     • nerve supply