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Colon
Crypts of Lieberkuhn
Mucosa
GI Tract
MucosaSubmucosaCircular Portion of the
Muscularis Externum
Longitudinal Portion of the
Muscularis Externum
Mesothelium
Simple Squamous Epithelium Cells
Esophagus
Epithelium
Lamina Propria
Muscularis MucosaMucosa
Submucosa (connective tissue)
Circular Portion of the
Muscularis Externum
Longitudinal Portion of the
Muscularis Externum
MuscularisExternum
Transition Between Esophagus & Cardiac Portion of the Stomach
Esophagus Cardiac Portionof the Stomach
Stratified SquamousEpithelium
Simple ColumnarEpithelium
MucosalGlands
Stomach
Mucosa
Submucosa
MuscularisExternum
Stomach
Gastric Gland
Pits
Simple ColumnarEpithelium
Pyloric Portion of the Stomach
PyloricGlands
LaminaPropria
MuscularisMucosa
Submucosa
Transition for Pylorus to Duodenum
Pylorus Duodenum
Glands ofBrunner
Duodenum (Small Intestine)
Villi
Crypts ofLieberkuhn
Submucosa
MuscularisExternum
Duodenum (Small Intestine)
Crypts ofLieberkuhn
Submucosa
Glands of Brunner(Secrete alkaline mucus &found only in duodenum)
Cross-Section of Crypts
Crypts ofLieberkuhn(secretesintestinaldigestiveenzymes &mucus
LaminaPropria
Jejunem (Small Intestine)
Villi (increases surface area)
Crypts ofLieberkuhn
Cross-Section of Villi
Muscularis Mucosa
Circular Portion of the
Muscularis Externum
Longitudinal Portion of
the Muscularis Externum
Villi
Crypts ofLieberkuhn
Cross-Section of Villi
LaminaPropria
Goblet Cells(secret mucusFor lubrication)
Jejunem (Small Intestine)Villi
Mucosa
Submucosa
Ileum (Small Intestine)
Crypts ofLieberkuhn
Peyer’s Patches(dense lymphatictissue; located insubmucosa)
Appendix
Fat Cells
Crypts ofLieberkuhn
Appendix
Crypts ofLieberkuhn
Goblet Cells
Lymphocytes(in LamniaPropria)
Colon
Serosa (finished edge;if the organ is against thebody cavity wall then a serosa is not needed)
Muscularis Externum
CircularPortion
LongitudinalPortion
Aurbach’sMyentericPlexus
Aurbach’s Plexus
Neurons (Dark Spots)
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