Typically, the accessory renal artery courses into the renal hilum to perfuse the upper or lower renal poles. They may also enter the renal parenchyma directly from the renal cortex (called a polar artery). Rarely, they may arise from the lower thoracic aorta, as well as from the lumbar and mesenteric arteries.
The chain rule can be used to find whether they are getting closer or further apart. For example, one can consider the kinematics problem where one vehicle is heading west toward an intersection at 80 miles per hour while another is heading north away from the intersection at 60 miles per hour.
Best Answer: Typically chain link fence posts are spaced about ten (10) feet apart. The 10' spacing rule only applies if you are using a top pipe along the entire run of the fence. Typically the top pipe is 20-22' in length and has a tapered or compressed male end about 4-6 in length.est Answer: Typically chain link fence posts are spaced about ten (10) feet apart. The 10' spacing rule only applies if you are using a top pipe along the entire run of the fence. Typically the top pipe is 20-22' in length and has a tapered or compressed male end about 4-6 in length.