4 Stomach dilated part Esophagus store food Gastroesophageal opening temporarily Cardiac region ---digest protein primarily absorb part of ser water and lons te G
4. Stomach ---dilated part ---store food temporarily ---digest protein primarily ---absorb part of water and Ions
1)Mucosa cous plica-longitudinal shallow ditch gastric area(2-6mm) gastric pit-sma‖ depressions 2 Visceral
1) Mucosa: ---plica-longitudinal ---shallow ditchgastric area (2-6mm) ---gastric pit- small depressions
① epithelium sImple columnar epl surface mucous cell tall columnar -n ovoid, basally-located -mucinogen granule tight junction -high HCO3 undissolved mucus less endocrine cell
①epithelium: simple columnar epi • surface mucous cell: -tall columnar -N ovoid, basally-located -mucinogen granule -tight junction -high HCO3 - undissolved mucus • less endocrine cell
3的 胃腺 粘朋 小动脉 环肌 昏 一