Anhui Medical University Part two Esophagus,Stomach and Intestine
Anhui Medical University Part two Esophagus, Stomach and Intestine
Anhui Medical University 1.Components of digestive tract submucosa muscularis share a similar histological plan:a hollow tube composed of a lumen surrounded by a wall. The wall includes:mucosa,submucosa,muscularis and adventitia
Anhui Medical University share a similar histological plan: a hollow tube composed of a lumen surrounded by a wall. The wall includes: mucosa, submucosa, muscularis and adventitia. 1. Components of digestive tract mucosa submucosa muscularis
Anhui Medical University 2.General structural details of the wall 1)Mucosa(mucous membrane) -Three sublayers Epithelium stratified squamous epi. simple columnar epi. FUNCTION: A selectively permeable barrier. Facilitate the transport and digestion Promote the absorption .Produce the hormone .Secret mucus for lubrication and protection
Anhui Medical University FUNCTION: A selectively permeable barrier. • Facilitate the transport and digestion. • Promote the absorption •Produce the hormone •Secret mucus for lubrication and protection. 2. General structural details of the wall 1) Mucosa (mucous membrane) -Three sublayers Epithelium : stratified squamous epi. simple columnar epi
Anhui Medical University >Lamina propria: LCT rich in BV,LV and nerves lymphoid tissues,glands >Muscularis mucosae: Except esophagus,2 sublayers (Inner circular and outer longitudinal of smooth muscle). Function:Promote the movements of the mucosa and increase its contact with the food
Anhui Medical University Lamina propria: LCT rich in BV, LV and nerves ,lymphoid tissues, glands Muscularis mucosae : Except esophagus, 2 sublayers (Inner circular and outer longitudinal of smooth muscle). Function: Promote the movements of the mucosa and increase its contact with the food. LP LP
Anhui Medical University √2)Submucosa::CT. Submucosa nerve plexus. 3)Muscularis Smooth muscle cells and less skeletal muscle cells. inner circular and outer longitudinal sublayer Myenteric nerve plexus Function:The contraction of muscularis propel and mix the food in digestive tracts. 4)Adventitia Serosa:LCT mesothelium Fibrosa:LCT muscularis
Anhui Medical University 2) Submucosa: CT . Submucosa nerve plexus. 3) Muscularis : Smooth muscle cells and less skeletal muscle cells. inner circular and outer longitudinal sublayer Myenteric nerve plexus Function: The contraction of muscularis propel and mix the food in digestive tracts. 4) Adventitia Serosa: LCT + mesothelium Fibrosa: LCT mucosa submucosa muscularis