| bulbo- | Bulb; bulbus Origin: L. Bulbus (05 Mar 2000) |
|---|---|
| bulbo-tuber | <botany> A corm. Origin: Bulb,+ tuber. Source: Websters Dictionary (01 Mar 1998) |
| bulbocapnine | Drug derived from roots of Corydalis cava and C. Tuberosa (family Fumariaceae) and Dicentra canadensis (family Papaveraceae); blocks the effects of dopamine on peripheral dopamine receptors. (05 Mar 2000) |
| bulbocavernosus | See: musculus bulbocavernosus. (05 Mar 2000) |
| bulbocavernosus muscle | <anatomy> 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, constricts bulbous urethra when attempting to expel last drops following urination, or spasmodically with 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 which resists prolapse of pelvic viscera. Nerve supply, pudendal (deep perineal branch). Synonym: musculus bulbospongiosus, musculus bulbocavernosus, musculus ejaculator seminis, musculus sphincter vaginae, sphincter vaginae. (05 Mar 2000) |
| bulbocavernosus reflex | A sharp contraction of the bulbocavernosus and ischiocavernosus muscles when the glans penis is suddenly compressed or tapped. (05 Mar 2000) |
| bulboid | Bulb-shaped. Origin: bulbo-+ G. Eidos, resemblance (05 Mar 2000) |
| bulboid corpuscles | Nerve terminals in skin, mouth, conjunctiva, and other parts, consisting of a laminated capsule of connective tissue enclosing the terminal, branched, convoluted ending of an afferent nerve fibre; generally believed to be sensitive to cold. Synonym: corpuscula bulboidea, bulboid corpuscles. (05 Mar 2000) |
| bulbomimic reflex | In a case of coma from severe apoplexy, pressure on the eyeballs causes contraction of the facial muscles of expression on the side opposite to the lesion; if coma due to diabetes, uraemia, or other toxic cause the reflex is present on both sides. Synonym: facial reflex, Mondonesi's reflex. (05 Mar 2000) |
| bulbonuclear | Relating to the nuclei in the medulla oblongata. (05 Mar 2000) |
| bulbopontine | Relating to the rostral part of the rhombencephalon composed of the pons and overlying tegmentum. (05 Mar 2000) |
| bulbosacral | See: bulbosacral system. (05 Mar 2000) |
| bulbosacral system | parasympathetic part |
| bulbospinal | Relating to the medulla oblongata and spinal cord, particularly to nerve fibres interconnecting the two. Synonym: spinobulbar. (05 Mar 2000) |
| bulbourethral | Relating to the bulbus penis and the urethra. Synonym: urethrobulbar. (05 Mar 2000) |