bulb (bulb) a rounded mass or enlargement.bul´bar
bulb
bulb of aorta the enlargement of the aorta at its point of origin from the heart.
bulb of corpus spongiosum b. of penis.
bulb of hair the bulbous expansion at the proximal end of a hair in which the hair shaft is generated.
olfactory bulb the bulblike expansion of the olfactory tract on the under surface of the frontal lobe of each cerebral hemisphere; the olfactory nerves enter it.
onion bulb in neuropathology, a collection of overlapping Schwann cells resembling the bulb of an onion, encircling an axon that has become demyelinated; seen when an axon has repeatedly become demyelinated and remyelinated.
bulb of penis , bulb of urethra the enlarged proximal part of the corpus spongiosum.
bulb of vestibule of vagina , vestibulovaginal bulb a body consisting of paired masses of erectile tissue, one on either side of the vaginal opening.
bulb (b lb)n. A globular or fusiform anatomical structure or enlargement. |
bulb
Etymology: L, bulbus, swollen root
any rounded structure, such as the eyeball, hair roots, and certain sensory nerve endings.
bulb
1. a rounded mass or enlargement.
2. medulla oblongata.
aortic bulb
the enlargement of the aorta at its point of origin from the heart.
auditory bulb
the membranous labyrinth and cochlea.
eye bulb
the eyeball.
gustatory b's
taste buds.
hair bulb
the bulbous expansion at the proximal end of a hair, in which the hair shaft is generated.
heel bulb
the swollen part of the hoof wall and adjacent soft tissue at the back of the hoof characterized by a periople which is wider than at any other part of the hoof.
Krause's b's
see bulboid corpuscle.
olfactory bulb
see olfactory bulb.
penile bulb
see penile bulb.
taste b's
taste buds.
urethral bulb
the enlarged proximal part of the corpus spongiosum.
vestibular bulb, vestibulovaginal bulb
a body consisting of paired masses of erectile tissue, situated one on either side of the vaginal orifice.
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