ARDMS Abdomen Board (AB) Practice Exam 2026 – All-in-One Study Guide for Exam Success!

The area of the bladder located between the neck and apex is known as the trigone. This structure is significant in both anatomy and function. The trigone is a clinically important region that forms a smooth triangular area on the internal surface of the bladder, marked by the openings of the ureters at the two upper corners and the urethral opening at the lower corner.

This triangular configuration helps facilitate the emptying of the bladder, as it remains distinct from the surrounding bladder wall, which is more musculature and elastic in structure. It is also less distensible than the bladder walls and is associated with the contraction of the bladder during urination.

Understanding this anatomical feature is crucial for diagnosing and managing various urological conditions, such as bladder infections or conditions that may affect bladder outlet obstruction. The precise knowledge of the trigone's location and function allows healthcare professionals to make more informed decisions regarding bladder pathology.

Other terms pertinent to bladder anatomy, such as fossa, fundus, and base, refer to different structures or areas that do not encapsulate the specific region described in the question. The fundus, for example, refers to the upper portion of the bladder opposite the neck, while the base generally refers to the broader area on which the