栉江珧消化系统组织学与组织化学的研究

运用组织学和组织化学方法对栉江珧消化系统的结构和功能进行了研究.栉江珧消化管的粘膜上皮由纤毛柱状细胞和杯状细胞组成,唇瓣、中肠和上行肠的上皮层还有嗜酸性粒分泌细胞;消化盲囊的腺上皮由分泌细胞和消化(吸收)细胞组成.皮下结缔组织中富含血腔隙,结缔组织和血腔隙中有"颗粒细胞".食道、胃、中肠、晶杆囊及消化盲囊能分泌消化酶,对食物进行消化和吸收;结缔组织、"颗粒细胞"也参与了食物的消化吸收.唇瓣、食道、晶杆囊和中肠的上皮细胞及结缔组织中的"颗粒细胞"内含铁,结缔组织中含钙.

Histological and histochemical studies on digestive system of Pinna ( Atriina) pectinata

The structure and function of digestive system of Pinna (Atriina) pectinata Linnaeus were studied using histological and histochemical methods. The epithelium of the digestive tract is composed of columnar ciliated cells, goblet cells (mocous cell), and eosinphilic cell only in the epithelium of labial palp, mid-gut and ascending limb intestine. The epithelium of digestive diverticula consists of secretory cells and digestive (absorptive) cells. Many blood spaces present in the subcutaneous connective tissue, and "granular cells " exist in the connective tissues and blood spaces. The epithelium of esophagus, stomach, mid-gut, style sac and digestive diverticula can produce the digestive enzymes which involved in the digestion and absorption of food particles, and the connective tissues and "granular cell " also participate in the digestion and absorption of food. Ferric ion is present in the epithelium of labial palp, esophagus, mid-gut and style sac,and "granular cell "in the connective tissues. Calcium exists in the connective tissue.