Structure and Function of the Bladder Neck [Paperback]

Introduction.-Materials and Methods.-Musculus Detrusor Vesicae.-The Musculature of the Trigonum Vesicae.-Diaphragma Urogenitale.-Musculus Sphincter Urethrae.-Musculus Dilatator Urethrae.-Musculus Ejaculatorius.-Changes of the Muscles of the Lower Uninary Tract with Age.-Three Dimensional Model of the Anatomy of the Lower Urinary Tract.-Fundamentals of the Neuroanatomy of the Lower Urinary Tract.-Discussion (Functional Interpretation of the Anatomical Findings).-Further Studies and New Approaches.-Terminologia Anatomica of the Lower Urinary Tract.-Summary.-References.-Subject IndexThe studies described here are based on histological serial sections of the entire bladder neck region of 50 male and 15 female deceased of all age groups. For the first time, a musculus vesicoprostaticus et vesicovaginalis, a musculus dilator urethrae and a musculus ejaculatorius are defined. The bipartite musculus sphincter urethrae (glaber et transversostriatus) is the morphological basis for the maintenance of the rest and stress continence. New findings necessitate new interpretations of the basic functions of the lower urinary tract. The results presented here prove that the corresponding morphological substrate differs in many respects from descriptions in the literature.Springer Book ArchivesDE