Bio 303 Lab E Histology
Submucosa layer
Dense irregular Areolar connective tissue Esophageal glands are found here Name the layer
Hepatic capsule
Dense irregular CT bordering the liver. Name the feature (3)
Submucosa
Dense irregular connective tissue is found here Areolar connective tissue is found here Esophageal glands are found here Name the layer
Villi
Fingerlike projections of the mucosa of small intestine into the lumen.
Plicae circulares (s: plica circularis)
Folds of the intestinal wall. Core is submucosa.
Submucosa
Known as the core of the ruga Name the feature
Lamina propria
Known as the core of the villis What is 16?
Lamina propria
Layer of areolar CT, between the epithelium & muscularis of the mucosa.
Hepatic triad
Located in the upper left hand corner
Taeniae coli
Longitudinal ribbons of smooth muscle that after the outer longitudinal layer
Lamina propria
Made of areolar connective tissue
Submucosal plexus
Made of nervous tissue and the muscularis mucosa
Muscularis mucosa
Made of smooth muscle Contains the Inner circular layer and the outer longitudinal layer Name the layer
Stomach layers
Mucosa Muscularis mucosa Submucosa Muscularis externa
General layers of the GI tract & esophagus
Mucosa Submucosa muscularis externa Outer serosa or adventitia
Esophageal glands
Name the feature
Branch of hepatic artery
Name the feature (2)
Hepatic sinusoids
Name the feature (S)
Villis
Name the feature (V)
Mucosa layer of the esophagus
Non-keratinized stratified squamous epithelium Lamina propria Muscularis mucosa
Adventitia
Outer layer of the rectum, surrounding the thick muscularis externa.
Jejunum
Part of small intestine with exceptionally long villi. Increasingly greater proportion of goblet cells. Relatively few glands and little lymphatic tissue in submucosa.
Duodenum
Part of small intestine with relatively short "leaf-like" villi. Relatively few number of goblet cells.
Large intestine
Part of the GI tract that contains intestinal crypts, but no villi. Contains lymphatic tissue in the submucosa. Abundant goblet cells. Reduced microvilli.
Ileum
Part of the small intestine with relatively short villi. Contains prominent LYMPHATIC TISSUE. Higher proportion of goblet cells.
Simple columnar epithelium
Primary tissue type lining the GI tract. Allows absorption of water & nutrients from the lumen.
Duodenal glands
Prominent exocrine glands within the submucosa of the part of the small intestine that contains relatively short villi.
Non-keratinized stratified squamous epithelium
Tissue type adjacent to the lumen of the esophagus
Hepatocytes
[*]
Gastric glands
[12] Deeper, enclosed extensions of gastric pits
Intestinal crypts
[1] Invaginations found between villi
Gastric pits
[2] Invaginations of the stomach mucosa
Central vein
[B]
Lymphatic tissue
[yellow circles] Prominent within the ileum as well as in the submucosa of the large intestine.
Serosa
outer layer of the esophagus, surrounding the muscularis externa Name the layer
Myenteric Plexus
Found within the muscularis externa Name the feature
Muscularis Externa
Inner circular layer and outer longitudinal layer is found here Name the layer?
