Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to hair bulb: hair papilla
a rounded mass or enlargement. adj., adj bul´bar.
bulb of aorta the enlargement of the aorta at its point of origin from the heart.
auditory bulb the membranous labyrinth and cochlea.
bulb of eye 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.
inferior bulb of jugular vein a dilatation of the internal jugular vein just before it joins the brachiocephalic vein.
Krause's bulb end-bulb.
olfactory bulb the bulblike expansion of the olfactory tract on the under surface of the frontal lobe of each cerebral hemisphere.
bulb of penis bulb of urethra.
superior bulb of jugular vein a dilatation at the beginning of the internal jugular vein.
taste b's taste buds.
bulb of urethra the enlarged proximal part of the corpus spongiosum.
bulb of vestibule (vestibulovaginal bulb) a body consisting of paired masses of erectile tissue, situated one on either side of the vaginal orifice.
bulb of hair, hair bulb
hair bulb, the lower expanded extremity of the hair follicle that fits like a cap over the papilla pili.
Synonym(s): bulbus pili
The expanded portion at the lower end of the hair root. The growth of a hair results from the proliferation of cells of the hair bulb.
See also: bulb