Transcript appendix organ diagram

Histology of GIT
Histology of GIT
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Schematic diagram showing different layers of GIT:
Mucosa
Submucosa
Muscularis
Serosa
The Tongue
The tongue is a muscular
organ
It is covered by stratified
squamous epithelium
The upper surface is
roughened by the
presence of papillae
Four types are known
Filliform
Foliate
Fungiform
Circumvallate
Taste Buds
Consists of three types of cells:
1. Neuroepithelial cell
2. Sustentacular cell
3. Basal cell
Eosophagus
Consists of four layers
Covering epithelium
Eosophageal submucus gland
Eosopageal cardiac glands
Muscular layer
Covering serosa
Stomach
It is a mixed gland
Is divided into four parts
Is divided into four layers
Mucosa and submucosa are
found within rugae
Cardia contains simple or
branched tubular glands
Stomach Cont.
Fundus and body contain branched tubular glands
3-7 opens into to one pit
Gastric gland is divided into
Gastric pit
Stem cells
Mucus neck cells
Oxyntic cells
Chief cells
Enteroendocrine cells
Small Intestine
Composed of Duodenum, Jejunum, Ileum
Plica circularsis mostly in jejunum
Intestinal villi leaf-like to tubular form
Intestinal glands (simple tubular)
Absorbtive cells and microvilli
Goblet cells
Paneth cells
M cells
Regions of Small Intestine
Large Intestine
No folds or villi
Abundance of goblet cells
Absorptive cells with irregular
microvilli
Lymph follicles
Teniae coli
Appendices epiploicae
Appendix
It is a large intestine Except:
Narrow, small, irregular lumen
Abundunt lymphoid follicles
Few and short glands
No teniae coli
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