Esophagus, Stomach, Duodenum
subesophageal 4X.jpg
subesophageal 4X
Subesophageal 10X.jpg
Stomach 4X.jpg
Stomach 4X
Stomach 10X.jpg
Stomach 10X
Stomach 40X.jpg
Stomach 40X
gastric gland 4X.jpg
gastric gland 4X
Gastric gland 20X.jpg
Gastric gland 20X
Gastric gland 40X.jpg
Gastric gland 40X
Gastric glnd 40X.jpg
Gastric glnd 40X
Duodenum 4X.jpg
Duodenum 4X
Duodenum 10X.jpg
Duodenum 10X
Duodenum 20X outer.jpg
Duodenum 20X outer
Duodenum 20X.jpg
Duodenum 20X
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Esophagus
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Toggle ItemEsophagus 4XA: Stratified squamous epithelium
B: Muscularis Mucosa
C: Subesophageal gland
D: Submucosa
E: Muscularis externa -
Toggle ItemEsophagus 20XA: Epithelium
B: Muscularis mucosa
C: Subesophageal gland
D: Submucosa
Stomach
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Toggle ItemStomach 4XA: Gastric epithelium is simple columnar epithelium
B: Gastric glands have differential staining due to the different cells that make up the gastric gland. The parietal and the chief cells cause the gland to stain pink and purple respectively. The glands also cause the stomach to have a characteristic crenelated castle wall shape.
C: The submucosa of the stomach is full of vasculature and loose connective tissue -
Toggle ItemStomach 10XA: Simple columnar epithelium lines the interior of the stomach
B: The gastric pits are invaginations in the wall of the stomach. These give the stomach mucosa a crenelated wall effect.
C: Parietal cells stain pink due to their acidic product hydrochloric acid
D: Chief cells stain purple due to their basic product pepsinogen -
Toggle ItemStomach 40XA: Simple Columnar epithelium
B: Gastric pits line the inside of the stomach increasing the surface area -
Toggle ItemGastric 4XA: Gastric epithelium is simple columnar epithelium
B: Gastric glands have differential staining due to the different cells that make up the gastric gland. The parietal and the chief cells cause the gland to stain pink and purple respectively. The glands also cause the stomach to have a characteristic crenelated castle wall shape.
C: The submucosa of the stomach is full of vasculature and loose connective tissue -
Toggle ItemGastric 10XA: Simple columnar epithelium lines the interior of the stomach
B: The gastric pits are invaginations in the wall of the stomach. These give the stomach mucosa a crenelated wall effect.
C: Parietal cells stain pink due to their acidic product hydrochloric acid
D: Chief cells stain purple due to their basic product pepsinogen -
Toggle ItemGastric 40XA: Simple Columnar epithelium
B: Gastric pits line the inside of the stomach increasing the surface area
Duodenum
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Toggle ItemDuodenum 4XA: Mucosa
B: Submucosa
C: Muscularis externa -
Toggle ItemDuodenum 10XA: Goblet cell is a unicellular glycosaminoglycan producing exocrine gland
B: Striated simple columnar epithelium lines the lumen of the small intestine
C: Mucosa houses the epithelium, goblet cells, lamina propria which is just beneath the epithelium, enteroendocrine cells and the paneth cells.
D: Muscularis mucosa is a thin smooth muscle layer just beneath the mucosa
E: Brunner's glands set the duodenum apart from the rest of the small intestine as it is only found here. It is a compound multicellular branched tubular exocrine gland
F: Inner circular smooth muscle layer of the muscularis externa
G: Outer longitudinal smooth muscle layer of the muscularis externa -
Toggle ItemDuodenum 20XA: Striated simple columnar epithelium
B: Goblet cell
C: Paneth cells are unicellular exocrine glands that produce antimicrobial peptides. They stain acidphilic or red and are located at the bottom of the crypts in the small intestine -
Toggle ItemDuodenum 20XA: Outer longitudinal smooth muscle layer
B: Auerbach's nerve plexus is located throughout the small intestine
C: Inner circular smooth muscle layer
D: Submucosa
E: Brunner's gland secretes bicarbonate to neutralize contents coming from the stomach
F: Mucosa