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长蛸唾液腺和消化腺的组织学与组织化学研究 总被引：4，自引：0，他引：4
以组织学和组织化学方法，研究了长蛸的唾液腺和消化腺。前唾液腺腺细胞含团状蛋白性质的分泌颗粒。后唾液腺有两种腺管，I型腺管由I型腺细胞和黏液细胞组成。I型腺细胞团状分泌颗粒及丰富的RNA，且脂酶活性；黏液细胞分泌酸性黏多糖。Ⅱ型腺管的腺细胞内含一桃形丝状物。肝细胞含大量的分泌颗粒，呈现强的蛋白酶及弱的非特异性酯酶和脂酶活性。胰脏腺细胞呈非特异性酯酶和弱的蛋白酶和脂酶活性。 相似文献
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Structure and function of the digestive system of a bivalve mollusc, Solen grandis, were studied using light microscopy and histochemical methods. The wall of digestive tube consists of four layers: the mucosal
epithelium, connective tissue, muscular and fibrosa or serosa (only in the portion of rectum) from the inner to the outer.
The ciliated columnar epithelial cells, dispersed by cup-shaped mucous cells, rest on a thin base membrane. There are abundant
blood spaces in connective tissue layer. The digestive diverticula are composed of multi-branched duct and digestive tubules.
The digestive tubules are lined with digestive and basophilic secretory cells, and surrounded by a layer of smooth muscle
fibers and connective tissues. Activities of acid and alkaline phosphatases, esterase and lipase are detected in the digestive
cells, and the epithelia of stomach and intestine, suggesting that these cells are capable of intracellular digesting of food
materials and absorbing. Besides, acid phosphatase and esterase activities are present in the posterior portion of esophagus.
Phagocytes are abundant in blood spaces and the lumens of stomach and intestine, containing brown granules derived from the
engulfed food materials. The present work indicates that phagocytes play important roles in ingestion and digestion of food
materials, which is supported as well by the activities of acid phosphatase, esterase and lipase detected in blood spaces. 相似文献
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南美白对虾消化系统的组织学和组织化学研究 总被引：12，自引：0，他引：12
利用光镜对南美白对虾(Penaeus vannamei)消化系统进行组织学和组织化学研究。结果表明：消化系统由消化道和肝胰腺组成。食道肌层最发达,肌肉中富含蛋白质和脂类;胃内几丁质特化成胃磨和腺滤器;中肠上皮细胞游离面具发达的微绒毛,前、后盲囊上皮细胞有柱状和杯状两种形态;食道和后肠中分布有大量粘液腺。肝胰腺由发达的肝小管组成,肝小管管壁细胞有4种类型,即：R—细胞、B—细胞、F—细胞和E—细胞。还初步探讨了消化系统组织结构与功能的关系。 相似文献
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