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vasa recta การใช้

ประโยคมือถือ
  • The vasa recta ( capillary loops ) also have a slow flow as well.
  • This provides an oncotic pressure for ions to enter the vasa recta from the interstitium.
  • Increases in vasa recta flow wash away metabolites and cause the medulla to lose osmolarity as well.
  • As well, blood in the vasa recta still has large proteins and ions which were not filtered through the glomerulus.
  • On the other hand, the vasa recta are formed by efferent arterioles exiting the glomeruli of mammalia-type nephrons.
  • However, they surround the loop of Henle, forming the vasa recta, only in juxtamedullary nephrons and not in cortical nephrons.
  • Along with the loop of Henle, these vasa recta play a crucial role in the establishment of the nephron's countercurrent exchange system.
  • This results in a smaller capillary hydrostatic pressure, which causes an increased absorption of sodium ions into the vasa recta at the proximal tubule.
  • AQP1 is a widely expressed proximal tubules, the descending limb of the loop of Henle, and in the descending portion of the vasa recta.
  • From the terminal arches numerous small straight vessels ( vasa recta ) arise which encircle the intestine, upon which they are distributed, ramifying between its coats.
  • Nearest the duodenum the mesenteric loops are primary, the vasa recta are long and regular in distribution, and the translucent spaces ( lunettes ) are extensive.
  • V 1 Rs are found in kidney, where they occur in high density on medullary interstitial cells, vasa recta, and epithelial cells of the collecting duct.
  • They can be distinguished from the vasa recta by the absence of blood, and they can be distinguished from the thick ascending limb by the thickness of the epithelium.
  • The mechanism of counter current multiplication works together with the vasa recta's counter current exchange to prevent the wash out of salts and maintain a high osmolarity at the inner medulla.
  • ADH binds to principal cells in the collecting duct that translocate aquaporins to the membrane, allowing water to leave the normally impermeable membrane and be reabsorbed into the body by the vasa recta, thus increasing the plasma volume of the body.