Related Experiment Videos
[Anatomic principles of urinary incontinence]
W Dorschner1, J U Stolzenburg, J Neuhaus
1Klinik und Poliklinik für Urologie, Universität Leipzig, Stephanstrasse 21, 04104 Leipzig. dorw@medizin.uni-leipzig.de
Der Urologe. Ausg. A
|June 19, 2001
Summary
This study clarifies the anatomy of the urinary sphincter muscles in males and females. Findings reveal distinct structures for the internal sphincter (m. sphincter vesicae) and external sphincter (m. sphincter urethrae transversostriatus et glaber), aiding continence understanding.
Area of Science:
- Urology
- Anatomy
- Histology
Context:
- Urinary continence mechanisms remain debated.
- Previous studies lacked detailed anatomical descriptions of the sphincter musculature.
- This research re-examines the lower urinary tract sphincter anatomy.
Purpose:
- To clarify the morphological basis of urinary continence.
- To provide a detailed histological analysis of the male and female urinary sphincters.
- To create a 3D model and animations for anatomical visualization.
Summary:
- The internal sphincter (m. sphincter vesicae) is a distinct circular muscle around the urethral orifice, not involving detrusor lamellas.
- The external sphincter (m. sphincter urethrae transversostriatus et glaber) has striated and smooth muscle components, is horseshoe-shaped, and separate from pelvic floor muscles.
- A deep transverse perineal muscle was not identified in the specimens.
Impact:
- Provides a clearer understanding of urinary sphincter anatomy.
- Offers a foundation for future research on urinary incontinence and its treatment.
- The 3D model and animations serve as valuable educational and research tools.