bulbospongiosus


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bulbospongiosus

/bul·bo·spon·gi·o·sus/ (-spon″je-o´sus) bulbocavernous muscle.

bulbospongiosus

a muscle that covers the bulb of the penis in the male and the bulbus vestibuli in the female. Also called accelerator urinae, ejaculator urinae. Formerly called bulbocavernosus.

bulbospongiosus

(bŭl″bō-spŏn″jē-ō′sŭs)
One of the three voluntary muscles of the penis. It acts to empty the canal of the urethra after urination and to assist in erection of the corpus cavernosum urethrae. The anterior fibers contribute to penile erection by contracting to compress the deep dorsal vein of the penis.
References in periodicals archive ?
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.
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.
Bulbospongiosus 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 muscles.
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.