Chapter 13 Digestive tract
Chapter 13 Digestive tract
Digestive system Digestive tract P Digestive gland
---Digestive system: Digestive tract Digestive gland
1. Components of digestive tract oral cavity pharynx esophagus stomach small intestine -large intestine
1. Components of digestive tract ---oral cavity ---pharynx ---esophagus ---stomach ---small intestine ---large intestine
2. General plan of digestive tract --Except for oral cavity and pharynx, allother organs share a similar histological plan 袋膜 线毛 彼甓 -浆 消化外 腺的导 粘膜下腺 析! 粘股 肌间拧丛 上皮 固有层 巴小结 岩犋 -粘膜下神经从 纵行肌 ……环行肌
2. General plan of digestive tract ---Except for oral cavity and pharynx, all other organs share a similar histological plan
1)mucosa epithelium e stratified squamous epi. protecting e simple columnar epi, digestion and absorption lamina propria: LCT-compact CT: contain more cells and fiber ●BV, LV-capillaries ● Lymphoid T e glands: structures formed by invagination of epi into lamina propria ---muscularis mucosa: a thin layer of Sm
1) mucosa ---epithelium: stratified squamous epi.: protecting simple columnar epi,: digestion and absorption ---lamina propria: LCT-compact CT: contain more cells and fiber BV, LV-capillaries Lymphoid T glands: structures formed by invagination of epi. into lamina propria ---muscularis mucosa: a thin layer of SM