Talk:Trigone of urinary bladder

Anatomy: Gross Mid‑importance

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Is the Trigone a muscle?

The article states that it is a region, but it is unclear to me what this region is composed of. How do NE, Epinephrine, and Acetylcholine affect this area? 71.114.182.236 (talk) 07:20, 5 February 2008 (UTC)[reply]