The structural classification system groups joints into three types: synovial, cartilaginous, and fibrous joints, while the functional, or degree of movement, classification system groups joints into diarthrosis, synarthrosis, and amphiarthrosis type joints. Synovial Joints
In summary, thapsigargin treatment markedly attenuates juxtamedullary afferent arteriolar vasoconstrictor responses to Ang II or NE. In addition, depletion of intracellular calcium pools with thapsigargin completely abolishes the response of juxtamedullary efferent arterioles to these vasoconstrictor agents.hese studies were conducted to determine the role of calcium release from the thapsigargin-sensitive intracellular calcium pool on the Ang II-and NE-mediated vasoconstriction of juxtamedullary afferent and efferent arterioles.
Remember that the afferent arteriole brings blood to the glomerulus and the efferent arteriole takes blood away from the glomerulus. The efferent arterioles either 1) carry blood to capillaries in the medulla (Vasa recta) or 2) form anastomotic capillaries in the cortex (peritubular plexus).he ARCUATE arteries (which arise from the interlobar arteries) run along the cortico-medullary junction and can be seen on cross section in histologic renal sections. Since this vessel courses through the cortico-medullary junction in the shape of an ARC, it is called the ARCUATE ARTERY.