bulbocavernosus


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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 ?
The superficial layer consisting of the bulbocavernosus (BC), the ischiocavernosus (IC), and the transverse perineal muscles promote rigidity and ejaculation (Siegel, 2014).
Sensitive periods for the androgen-induced masculinization of the rat spinal nucleus of the bulbocavernosus.
Focused neurological examination for S2, 3, 4 reflex arc (anal tone, peri-anal sensation, bulbocavernosus reflex)
Table 1 CT Signs of Urethral Injuries in Patients With Pelvic Fractures (46) Patients Patients With Without Associated Associated Urethral Urethral Injuries Injuries CT Signs (n = 17) (n = 30) Distortion or concealment of urogenital diaphragm fat plane 15 (88) 1 (3) Hematoma of ischiocavernosus 15 (88) 5 (17) Distortion or concealment of prostatic contour 10 (59) 2 (7) Distortion or concealment of bulbocavernosus 8 (47) 3 (10) Hematoma of obturator internus 9 (53) 4 (13) Note: Numbers in parentheses are percentages.
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.
Breedlove (1997a) found seasonal variation in the size of the spinal nucleus of the bulbocavernosus (SNB) a region of the brain which enervates the penis.
The clinician should test sensation in the genital and perineal area, and should check the bulbocavernosus reflex (Alberson et al.
The fascia of the bulbocavernosus and superficial transveralis muscles might need to be reapproximated with individual sutures.
The dorsal artery of the penis was observed to pass coudally through the body of the penis in a groove formed by the right and left bulbocavernosus muscle after the leaving arteria pudenda interna, and later running along the dorsum penis, each side of the retractor penis muscle.
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.