Comparative Neuromorphology in Animals

  • Ahmad Elbadawi


Anatomical, neuromorphological and physiopharmacological studies on the musculature of the organs of micturition, especially in the past two decades, have suggested the following concepts of its structural organization. First, although the detrusor is anatomically a single muscle, it is neuromorphologically divisible into body and base units (Elbadawi and Schenk, 1966). Second, muscle bundles of the base detrusor are anatomically continuous with the urethral muscularis distally (Hutch 1972) and provide the superficial and, in part, the deep periureteric sheaths of the distal segment of each ureter (Elbadawi 1972; Elbadawi etal. 1973). Third, upon its termination in the bladder wall, the muscularis of the distal ureters fan out beyond the ureteric orifices, and conjointly form the trigonal muscle (Elbadawi and Schenk 1971a). Fourth, the striated urethral sphincter, currently known as the rhabdosphincter (Elbadawi 1982b), is an integral part of the urethral wall, and is a distinct entity, being different and separate from the outlying musculature of the pelvic floor.


Pelvic Nerve Hypogastric Nerve Pelvic Plexus Bladder Base Adrenergic Innervation 
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  • Ahmad Elbadawi

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