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Transcript 
Alimentary Canal
• Digestive tract: mouth,
pharynx, esophagus,
stomach, small and large
intestine.
• Pg. 761
The tissues of the alimentary canal are
arranged in a 4-layer plan.
(pp. 762 - 768)
4 layer plan
4 layer plan.
Stratified Squamous
Columnar Epithelium
Goblet Cells
Submucosa
Peristalsis
Segmentation
Muscularis
Serosa
Histology of Salivary Glands
Parotid Gland on a Cadaver
Pharynx (pg.774)
Swallowing pg. 775
Esophagus
Peristalsis
Esophagus-Stomach Junction
Columnar Epithelium &
Goblet Cells
On the Stomach – locate these in lab.
Cardia
Pylorus
Fundus
Body
Stomach
Gastric Pits
Gastric Pits
Stomach Ulcer
Small Intestine Regions
Small Intestine Regions
Ileocecal Valve
Ileum
Mesentery pp. 776 - 777
2. Circular Folds
pg. 785
Circular Folds
3. Villi pg. 783
• Contains blood vessels
and a lymph vessel
(lacteal).
Villi
Circular Folds and Villi
4. Microvilli pg. 783
• Produce brush border
enzymes.
5. Smooth Muscle – arranged in 2 layers.
Large Intestine
(pp.790 - 793)
Appendix
Appendix Cross Section
Large Intestine Lining
Liver, Gall Bladder & Pancreas
(pp. 798 - 803)
Anterior
Posterior
Liver Cells
Gall Bladder and Pancreas
Protein Structure
Pepsinogen - Pepsin
Carbohydrates
Gallstones
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