Moreover, tissue, including the bulbospongiosus
muscle, is left intact over the urethra, serving as a cushion between the urethra and the sling and further minimizing the risk of erosion.
5,8) The perineal nerve supplies motor innervations to the pelvic floor muscles (transverse perineal muscles, bulbospongiosus
, ischiocavernosus, sphincter urethra and the levator ani muscles).
The ischiocavernosus (see Figure 5-2) and bulbospongiosus muscles lie lateral and dorsal to the base of the penis, respectively.
The structure of the tunica muscularis varies along the length of the duct, ranging between three layers near the bladder and a striated urethral muscle in more distal sections, where it becomes continuous with the bulbospongiosus muscle.
10:42 am P22 Bulbospongiosus
muscle dissection and ejaculatory
The entry of fluids into the urethra stimulates other sensory neurons which enter the central nervous system and ultimately activate parasympathetic efferents that innervate the bulbospongiosus
muscle, ischiocavernosus muscle, and muscles of the pelvic floor.
muscle dissection and ejaculatory function outcomes in urethroplasty
During ejaculation, movement of spermatozoa along the vas deferens is caused by rhythmic contractions of the ischiocavernosus and bulbospongiosus
muscle In males, the skeletal muscle located at the bulb of the penis which constricts the pelvic urethra to promote excretion of urine or enhance expulsion of semen after ejaculation.