دراسة الوصف المظهري والتركيب النسجي للكلية في الخفاش الكحلي (Pipistrella kuhlii)

Abstract

The present study aimed to investigate the morphological description and histological structure of the kidney in(Pipistrella Kuhlii) ,The comparative anatomical study revealed that kidney in Pipistrella kuhlii represented by a small solid structure bean like with dark red color. It is situated within the anterior half of the body cavity under the diaphragm, rested on the adipose connective tissue and surrounded by clear connective tissue capsule.The results of histological study revealed that kidney tissue in bat differentiated into cortex and medulla, and the cortex occupied small area incomparison with medulla area. The cortex contains glomeruli distributed in high numbers at the regions near the medulla while they were less in their number at the peripheral region. On the other hand the medulla contains sections of thick and thin segments of Henle's loop in addition to the sections of collecting tubules which forms the medullary rays. The histological examination showed that the nephron of kidneys in bat consist of urinary corpuscle (Glomerulus and Bowman's capsule) connected with the proximal convoluted tubule (PCT) which lead to Henle's loop. Henle's loop represented by thin and thick segment and lead at its posterior end to distal convoluted tubule (DCT). It is important to note that Henle's loop not represented in turtle and frog nephrons.Results of the present study revealed that kidney tubules of bat have the epithelial lining represented by simple cuboidal epithelium rested on basement membrane. The free surface of the lining epithelial cells in (PCT) had brush border while such border not appeared in (DCT). Histological examination also showed that collecting tubules of bat's kidney lined by simple cuboidal epithelium