798 URINARY ORGANS. correspond with the muscles of these tubes ; and at each posterior angle, by the orifices of the ureters, which are placed nearly two inches from each other, and about an inch and a. half behind the orifice of the urethra. The trigone cor- responds with the interval at the base… … the form of the canal is spindle-shaped, being wider in the middle than at either extremity, and narrowest in front, where it joins the membranous portion. A transverse section of the canal in this situation is triangular, the apex directed downwards. Upon the floor of the canal is a narrow…
Human anatomy
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