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GI System: Esophagus & Stomach Laboratory Orientation
#126 H&E Mid-esophagus Muscularis Externa Skeletal muscle Mixed smooth and skeletal muscle Submucosal sero- mucous gland Muscularis mucosae Lamina propria
#126 Esophagus Also #153 Muscularis mucose Submucosal gland
Muscularis Externa of mid-esophagus (#126): Skeletal and smooth m. Muscularis Externa of lower esophagus (#155): Smooth muscle only
#155 : Cardiac Stomach Cardio-esophageal junction (arrow) Cardiac glands
#156: Fundic Stomach Rugae
Mucosa of the Fundic Stomach Lymphatic nodule Muscularis mucosae
#156, #157: Gastric glands Gastric pit lined by surface mucous cells Mucous neck cells Fundus or body
#157: Body of the gastric glands
#157: Base of the gastric glands Chief cells Parietal cells
#162 Pylolic Stomach Pylo-duodenal junction (arrow) Pyloric sphincter muscle Duodenum
Cardiac glands: coiled (mucous) glands pit:gland=1:1 Fundic (gastric) glands: straight glands pit:gland=1:5 Pyloric glands: coiled (mucous) glands pit:gland=2~3:1
GI System: Small and Large Intestine Laboratory Orientation
#29 Small Intestine Mesentery (ct + epithelium) Submucosa (connective tissue) Mucosa (epithelium + lamina propria) Muscularis Externa (smooth muscle) Lumen Muscularis mucosae
#29 – Intestinal Villi Intestinal villi
#29-Simple columnar epithelium with striated border (microvilli) and goblet cells Microvilli (striated border) Goblet cells Enterocytes ?
#162 Pylo-duodenal junction (arrow) Pyloric sphincter muscle
#161 Pylo-duodenal Junction and Pancreas Pyloric stomach Duodenum Pancreas Duodenum Pancreas Pyloric stomach
#161 Muscularis mucosae Lymphatic nodules Brunner’s gland
#161, 162 Duodenum Lumen Intestinal villus Muscularis mucosae crypts or i. glands Brunner’s glands pancreas
#29, 168 Jejunum or Ileum lumen submucosa Muscularis mucosae Crypts of Lieberkuhn
#29, Intestinal glands (crypts) Paneth cells Enteroendocrine cells Mitotic cell ? ? ?
#246 UCSF Enteroendocrine cell Paneth cell
#29, Myenteric (Auerbach’s) plexus Ganglion cells
#176: Colon (Mucosa of the colon) m.m No villi, Straight glands, lots of goblet cells
#176 – colon mucosa
#177-1, 177-3, Recto-anal junction Hemorrhoidal veins Muscularis mucosae Type of epithelium changes Muscularis mucosae frays Dilated veins
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Slot 4.1: Submandibular (left) and sublingual (right) glands m = mucous, s = serous, x = mixed, d = duct Serous demilunesD = duct; F = adipose cells Mucous.
LAB Epithelium. Stratified squamous nonkeratinized epithelium underlying lamina properia (fine connective tissue ),(muscularis mucosa) thin longitudinal.
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Slide 155, pharynx, H&E, 4x obj. mucosal epithelium laminapropria elastic fibers skeletal muscle muscularis externa.
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32409 Small intestine Large intestine Small intestine Intestine, liver, gall bladder, and pancreas.
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DIGESTIVE. ESOPHAGUS Stratified squamous epithelium Submucosa The muscularis externa Esophageal glands.
Digestive System: Alimentary Canal Metallic 0 Mind.
Histology of The GIT. 4 main layers: 1- Mucosa 2. Submucosa 3. Muscularis Externa 4- Serosa or Adventitia * Regional modifications & specializations.
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What Tooth? Cuspid (Canine) What Tooth? Bicuspid Incisor Crown Neck (Found Below Gum Line) Root 15 6.
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Histology Quiz: The Digestive System By Andrew W. Parsons Copyright 2000, All Rights Reserved. To advance to next slide: -click mouse or “page down” To.
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Digestivetract. Light C Dark C Taste pore Taste bud.
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Essentials of Human Anatomy and Physiology, 9e by Elaine N. Marieb Copyright © 2009 Pearson Education, Inc., publishing as Pearson Benjamin Cummings. Figure.
Essentials of Human Anatomy & Physiology Copyright © 2003 Pearson Education, Inc. publishing as Benjamin Cummings Slides – Seventh Edition.
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