Gastrointenstinal system

http://www.gistsupport.org/about-gist/what-is-gist.php

Endodermal origin – mucosisSplanchnic mesoderm – other layersDevelopment of primitive gut

http://www.med.muni.cz/histol/MedAtlas_3/bin-release/MedAtlas.html#app=d8c4&92c7-selectedIndex=3&2b7a-selectedIndex=0

liver

pankreas

http://www.youtube.com/watch?v=qMnpxP6EeIY&feature=related

Adventicie

Jícen = Esophagus

•Cubic + sqamous non-cornified epithelia, longitudinal folds

•Mucin glands •Muscle - upper 2/3 striated

muscle and lower 1/3 smooth muscle (try to find)

•Connective tissue on the surface

http://www.acm.uiuc.edu/sigbio/project/digestive/early/esophagus.html

PAS (Periodic acid–Schiff) - Stains mucin dark pink

Muscle

Bazal lamina

Cubic epithelia

Squamous epithelia

Lamina propria(Submucosis)

Vessel

Magn. x40

Adult

Embryonic esophagus E2111/5 8th week iud

Magn. x5

Mucosis

Adventicia

Submucosis

Muscle

Stomach = Žaludek•Cylindric epithelia•Plenty mucin and serous glands

žlázky

Epihtelia

Lamina propria

Muscle Magn. x5

Magn. x40

6th week iud

stomach

Embryo

Mucosis

Lamina propria

Muscle

Adventicia

http://education.vetmed.vt.edu

Mucosis of villi

MuscularisMucosae

Mucosis of crypt

Lamina propria

Muscle

Adult

Magn. x5

• Cylindric epithelia• Enterocytes, undifferentiated cells, goblet cells, paneth´s cells, endocrinne cells

Small Intestine = Tenké střevo

Magn. x5

11th week of iud

Mucosis

AdventiciaMuscle

SubmucosisCrypt

Villi

Embryo

Proliferation of mucosis of primitive gut is followed by recanalisation

Lieberkuhn´s crypts

Lamina propriaVessel

Muscularismucosae

Submucosis

Magn. x5

Large intestine = Tlusté střevo

Adult

• Cylindric epithelia – short folds• goblet cells

10,5th week iud

Magn. x5

Embryo

Mucosis

Lamina Propria

Muscle

Adventicia