THE ABDOMINAL CAVITY 347 



ureters and pass through the tips of the lumbar transverse 

 processes. The pelvic part of the ureter may be indicated by 

 a line which curves downwards and medially, with a slight 



L. 



FIG. 108. Small Calculus impacted in the Right Ureter. The radiogram 

 was taken a few days after an attack of right renal colic. The outline 

 of the lower pole of the kidney is faintly visible. (Bythell and Barclay's 

 X-ray Diagnosis and Treatment. ) 



downward convexity, from the iliac bifurcation to the pubic 

 tubercle (spine). 



Posteriorly, the transpyloric plane passes through the lower 

 border of the first lumbar spine. The hilum of the kidney lies 



