end bud

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.

end bud.

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.

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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.