三角帆蚌围心腔的形态学研究

Morphological Study on Pericardial Cavity in Hyriopsis cuminglii

以3龄育珠蚌为研究对象,用组织学光镜制片技术对其围心腔的形态学结构进行了研究。结果显示围心腔主要有围心腔壁、心室、心耳、直肠和肾脏组成。其中直肠呈一个凹陷的管状结构,位于围心腔的中央,直肠肠壁较厚,由宽厚的肌纤维束组成,肠壁由内而外分别为黏膜层、黏膜下层、肌层和外膜层;心室围绕在直肠的外围,但是组成心室的肌纤维束之间联系疏松;心室的外围是围心腔壁,其中心室背侧的腔壁厚度最大;心耳位于心室的腹侧,是由围心腔壁和心室腹侧围成的腔体;两个肾脏位于围心腔底部两侧,与围心腔相通,可见深染呈蓝黑色的围心腔腺(凯伯尔氏器)。

The morphological structure of pericardial cavity of Hyriopsis cuminglii was investigated with histological section technology. The results showed that the pericardial cavity mainly consists of rectum, heart ventricle, the wall of ventricular pericardial cavity, auricle and kidney. The rectum is a sunken tube construction which is surrounded by heart ventricle; the rectum wail consists of mucosa, submucosa, mus cular layer and outer layer, from inner to outside; ventricle surrounds the rectum, and the ventricular muscle fiber arranging loosely; the wall of ventricular pericardial cavity surrounds the periphery of the rec- tum, which with the largest thickness in the dorsal; auricle located in the ventral of ventricle, which is formed by the pericardial cavity wail and ventral cavity ventricle; interlinked with pericardiaI cavity, two kidneys locate in the base of the pericardial cavity on both sides, and keber＇s organ is visible with blue black.