| 摘要: |
| 利用光学显微镜研究了嫁■(Cellana toreuma (Reeve))消化系统的组织结构。嫁■的消化系统由消化道（口区、食道、嗉囊、胃、肠、直肠、肛门）和消化腺（食道腺、肝胰腺）组成。口中具有齿舌和颚片，分别通过发达的肌肉与软骨相连；食道中部膨大成食道腺；胃和肠非常长。消化道壁由黏膜层、黏膜下层、肌层和外膜构成，黏膜上皮主要为单层柱状上皮细胞，肌层主要为环肌。胃壁和肠壁非常薄，黏膜下层和外膜均不发达。肝胰腺由无数肝小叶组成，每一肝小叶由位于基膜上的单层腺细胞和胚细胞组成。 |
| 关键词: 嫁■(Cellana toreuma (Reeve)) 消化系统 组织学 |
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| 基金项目:宁波大学科研基金资助项目（200455） |
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| Histological study on the digestive system ofCellana toreuma(Reeve) |
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| Abstract: |
| This paper reported the histological structure of the digestive system of Cellana toreuma(Reeve). The study indicates that the digestive system of C. toreuma(Reeve) comprises digestive tract(mouth, esophagus, crop, stomach, intestine and tectum) and digestive gland(esophageal gland and hepatopancreas). There are radula and jaws which connect with cartilage by strong muscles in the mouth. There is an esophageal gland in the middle of the esophagus. The stomach and intestine are very long. The wall of the digestive tract is made of four layers: tunica mucosa, tunica submucosa , tunica muscularis and tunica externa. Most of the epithelia are microvillous columnar cells.The muscularis is mainly composed of circular muscle. The walls of the stomach and intestine are very thin. The hepatopancreas is comprised of many hepatic lobules which consist of glandular cells and empryo cells. |
| Key words: Cellana toreuma(Reeve) digestive system histology |
