Caste: Caste, any of the ranked, hereditary, endogamous social groups, often linked with occupation, that together constitute traditional societies in South Asia, particularly among encyclopÃdia britannica
Reticuloendothelial System (RES). a system of cells of mesenchymal origin in vertebrate animals and in man that can be converted to actively mobile phagocytic cells (macrophages).I.I.eticuloendothelial System (RES). a system of cells of mesenchymal origin in vertebrate animals and in man that can be converted to actively mobile phagocytic cells (macrophages). I.I.
Juxtaglomerular Apparatus. This is a region where, in each nephron, the distal convoluted tubule touches the afferent arteriole. The juxtaglomerular cells are part of the afferent arteriole and the macula densa is part of the distal tubule.Renin is secreted from the JG cells and is important in regulating systemic blood pressure.he result is increased rate of flow and increased osmotic pressure (OP) in the distal convoluted tubule of this nephron. The macula densa (MD) on the tubule side of the juxtaglomerular apparatus is sensitive to the osmotic pressure (OP) and/or the rate of flow of the filtrate.