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.
Answers for Critical Thinking Questions. 1  Arterioles receive blood from arteries, which are vessels with a much larger lumen. As their own lumen averages just 30 micrometers or less, arterioles are critical in slowing downâor resistingâblood flow. 2  Vasoconstriction causes the lumens of blood vessels to narrow.