end bud


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bud

 [bud]
1. a structure on a plant, often round, that encloses an undeveloped flower or leaf.
2. something resembling the bud of a plant, especially a protuberance in the embryo from which an organ or part develops.
end bud the remnant of the embryonic primitive knot, from which arises the caudal part of the trunk.
limb bud one of the four lateral swellings appearing in vertebrate embryos, which develop into the two pairs of limbs.
tail bud
the primordium of the caudal appendage.
taste b's end organs of the gustatory nerve containing the receptor surfaces for the sense of taste.
ureteric bud a dorsal outgrowth of the mesonephric duct near its entry into the cloaca; it is the primordium of the ureter, renal pelvis, calices, and collecting tubules of the kidneys.
bud of urethra bulb of urethra.

caudal eminence

the rapidly proliferating mass of cells in the form of a taillike prominence found at the caudal extremity of the embryo; remnant of the primitive node.
Synonym(s): end bud, tail bud, tailbud

end bud

Etymology: AS, ende + Gk, bolbos, onion
a mass of undifferentiated cells produced from the remnants of the primitive node and the primitive streak at the caudal end of the developing embryo after formation of the somites is completed. In lower animals it gives rise to the tail or any other caudal appendage and part of the trunk. In humans it forms the caudal portion of the trunk. Also called tail bud.

cau·dal em·i·nence

(kaw'dăl em'i-nĕns)
The taillike caudal end of the embryo; it does not, however, form a tail in human embryos.
Synonym(s): end bud, tail bud.

bud

a structure resembling the bud of a plant, especially a protuberance in the embryo from which an organ or part develops.

end bud
the remnant of the embryonic primitive knot, from which arises the tail and caudal part of the trunk.
horn bud
bilateral cranial protuberances, destined to develop to a fighting horn or antler stage.
limb bud
one of the four lateral swellings appearing in vertebrate embryos, which develop into the two pairs of limbs.
tail bud
1. the primordium of the caudal appendage.
2. end bud.
taste b's
end organs of the gustatory nerve containing the receptor surfaces for the sense of taste.
ureteric bud
an outgrowth of the mesonephric duct giving rise to all but the nephrons of the permanent kidney.
bud of urethra
bulb of urethra.
References in periodicals archive ?
Not only did they see a decrease in ductal migration of the epithelium into the stromal compartment, but they also noted a permanent increase in the number of terminal ducts and terminal end buds.
They concluded their results as follows: The altered relationship in DNA synthesis between the epithelium and stroma and the increase in terminal ducts and terminal end buds are striking, because these changes are associated with carcinogenesis in both rodents and humans.
Ip has found that a high-CLA diet in rats reduces the number of terminal end buds, the structures in which mammary tumors form.
Two weeks later, they treated each animal with one of several agents that cause a maturation, or differentiation, of breast structures known as terminal end buds.