bulbocavernosus


Also found in: Dictionary, Encyclopedia, Wikipedia.
Related to bulbocavernosus: Bulbocavernosus Reflex

bulbospongiosus (muscle)

[TA]
perineal muscle; in the male: origin, the perineal membrane fascia on the dorsum of the bulb of the penis; insertion, central tendon of the perineum and the median raphe on the free surface of the bulb; action, voluntarily constricts bulbous urethra when attempting to expel last drops after urination, or spasmodically with, and after, ejaculation to expel semen. In the female: origin, the dorsum of the clitoris, the corpus cavernosum, and the perineal membrane; insertion, central tendon of the perineum; action, acts as a weak sphincter of the vagina; when developed, is a part of "cross-member musculature" of pelvic floor that resists prolapse of pelvic viscera; surrounds and compresses greater vestibular gland, especially during erection of bulb of vestibule, expressing secretion. Nerve supply, pudendal (deep perineal branch).

bulbocavernosus

/bul·bo·cav·er·no·sus/ (bul″bo-kav″er-no´sus) bulbocavernous muscle.

bulbocavernosus

[bul′bōkav′ərnō′səs]
Etymology: L, bulbus, swollen root, cavernosum, full of hollows

bulbocavernosus

(bŭl″bō-kăv″ĕr-nō′sŭs) [″ + cavernosus, hollow]
A muscle ensheathing the bulb of the penis in the male or covering the bulbus vestibuli in the female. It is also called ejaculator urinae or accelerator urinae in males and sphincter vaginae in females.
References in periodicals archive ?
Focused neurological examination for S2, 3, 4 reflex arc (anal tone, peri-anal sensation, bulbocavernosus reflex)
DESIGN: The Hershberger bioassay is designed to identify suspected androgens and antiandrogens based on changes in the weights of five androgen-responsive tissues (ventral prostate, paired seminal vesicles and coagulating glands, the levator ani and bulbocavernosus muscles, the glans penis, and paired Cowper's or bulbourethral glands).
For example, some groups defined the end of spinal shock as the first few days postinjury when recovery of initial reflexes, such as the bulbocavernosus reflex, had occurred, other groups as 2 weeks postinjury when recovery of the deep tendon reflexes had occurred, while still other groups defined the end of spinal shock as ~2 months postinjury when recovery of the bladder reflex had occurred.
The physical exam should include mental and functional status, a genital and rectal exam, and a neurologic exam of sacral root integrity (such as anal wink or bulbocavernosus reflex).
1993) ments/anaesthetic to decrease sensitivity (Xin, Choi, & Lee, 2000) Highly excitable bulbocavernosus Ejaculatory control techniques reflex; inability to control (e.
Rectal sphincter tone was decreased, with preserved bulbocavernosus reflex.
When a perineorrhaphy is performed, the bulbocavernosus muscles must be identified and plicated in the midline with care so as not to narrow the introitus so significantly that coital activity would be impaired.
Those persons with intact bulbocavernosus and or anal wink reflexes should have the potential to experience the sensation of orgasm, whereas women without S2 to S5 sensation and absent bulbocavernosus and anal wink reflexes should not.
Five androgen-responsive tissues (ventral prostate, paired seminal vesicles and coagulating glands, levator ani and bulbocavernosus muscles, glans penis, and paired Cowper's or bulbourethral glands) were evaluated.