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