Some species have a few dozen predatory individuals living in small natural cavities. Some highly organised colonies may cover large territories and have millions of individuals. Ants are usually small, but can carry the weight of twenty ants. Worker ants carry food back to the colony so that other ants and the queen can eat.
What is the Juxtaglomerular Apparatus? The juxtaglomerular apparatus is a type of endocrine organ that is small in size, located within kidneys and helps in the regulating the function of nephrons. This is mainly involved in the secretion of renin and EPO in response to changes in the renal blood pressure or blood flow. Juxtaglomerular Apparatus are type of epitheloid cells that are located in the afferent arterioleâs media just at the place where it enters glomeruli. These cells of Juxtaglomerular Apparatus embed secretory granules which are limned on the membrane and constitute renin.
Structure [edit]. The two general classes of nephrons are cortical nephrons and juxtamedullary nephrons, both of which are classified according to the length of their associated Loop of Henle and location of their renal corpuscle. All nephrons have their renal corpuscles in the cortex.t then moves into the vasa recta, which are only found in juxtamedullary nephrons and not cortical nephrons. The vasa recta are collecting capillaries intertwined with the loop of Henle through the interstitial space, in which the reabsorbed substances will also enter.