真鲷消化道的组织学和形态学研究

采用扫描电镜和光镜技术对真鲷的消化道进行了组织学和形态学研究。具发达颌齿的口咽腔之后，真鲷消化道由分化明显的食道、胃、小肠和直肠构成。口咽腔粘膜表面为复层上皮，其中含有怀状细胞和味蕾，表层细胞具微褶（脊）；食道粘膜也衬着复层上皮，由表层具微褶（脊）的扁平细胞、中层的怀状细胞及底部的基底细胞组成，食道粘部分区域 衬着单层柱状上皮；胃Ｖ形，粘膜表层为单层柱状上皮，贲门部和盲囊部上皮下有一厚层胃腺组织；

A study of the histology and morphology of the digestive tract of the Chrysophrys major

The anatomy and histology of the digestive tract of the Red sea-breamn (Chrysophrys major) is described from studies using light and scanning electronic microscopy. Behind the oralpharyngeal cavity with well developed mandibular teeth, the digestive tract consists of clearly distingnishabl ocsophagus, stomach, intestine and rectum. The mucosa of oral-pharyngeal cavity is multi-layered, formed by epithelial Cells with microridges and mucus-secreting Cells, and taste buds are present in the mucosa. The ocsophagus shows a multi-layered mucosa, comprised of a layer of Squamous cell with microridges, a mucus - secreting cell layer between and other epithelial cells in the base, some regions are single-layered columnar epithelium- The V-shaped stomach has a single-layered columnar epithelium under which, in the cardiac and fundic portion, Well developed gastric glands are present. The intestine is short (relative length 0. 6), the intestine epithelium consists of columnar cells intercalated with mucus-secreing cells. The digestive tract is of typical features of carnivorous fish.