Histology of the stomach mucosa 粘膜层一 muscularis mucosae submucosa 粘膜肌层 粘膜下层 muscularis 肌层 serosa 浆膜Histology of the stomach muscularis mucosae 粘膜肌层 serosa 浆膜 muscularis 肌层 submucosa 粘膜下层 mucosa 粘膜层