blastocyst

(redirected from blastocystic)
Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to blastocystic: Blastocystis hominis, blastocyst cavity

blastocyst

 [blas´to-sist]
the mammalian conceptus in the post-morula stage, consisting of the trophoblast and an inner cell mass.
Early blastocyst. From Dorland's, 2000.

blas·to·cyst

(blas'tō-sist),
The modified blastula stage of mammalian embryos, consisting of the embryoblast or inner cell mass and a thin trophoblast layer enclosing the blastocystic cavity or blastocele.
[blasto- + G. kystis, bladder]

blastocyst

/blas·to·cyst/ (-sist) the mammalian conceptus in the postmorula stage, consisting of an embryoblast (inner cell mass) and a thin trophoblast layer enclosing a blastocyst cavity.

blastocyst

(blăs′tə-sĭst′)
n.
The modified blastula that is characteristic of placental mammals. Also called blastodermic vesicle.

blas′to·cys′tic adj.

blastocyst

[blas′təsist]
Etymology: Gk, blastos + kystis, bag
the embryonic form that follows the morula in human development. Implantation in the wall of the uterus usually occurs during this stage, approximately 8 to 13 days after fertilization. The blastocyst consists of an outer layer (trophoblast) which is attached to the inner cell mast.
enlarge picture
Early blastocyst

blastocyst

A pre-implantation embryo consisting of a thin-walled hollow sphere of 16–40 cells, which appears in early mammalian development, the wall of which is the trophoblast. The embryo proper corresponds to a mass of cells at one side, which is equivalent to the blastula.

blas·to·cyst

(blas'tō-sist)
The modified blastula stage of mammalian embryos (including human), consisting of the embryoblast (inner cell mass) and a thin trophoblast layer enclosing the blastocystic cavity.
Synonym(s): blastodermic vesicle.
[blasto- + G. kystis, bladder]

blastocyst

The state of the development of the embryo at about eight days after fertilization, when implantation in the wall of the womb occurs. At this stage it consists of a double-layered sphere full of fluid. The outer layer, the trophoblast, forms the placenta, the inner layer forms the future fetus.

blastocyst

the BLASTULA of mammals, differing from that of lower vertebrates in consisting of an outer wall of cells, the TROPHOBLAST, by which the embryo implants in the uterus, and in having an inner cell mass, the embryonic disc, from which the embryo is formed.

Blastocyst

A cluster of cells representing multiple cell divisions that have occurred in the fallopian tube after successful fertilization of an ovum by a sperm. This is the developmental form which must leave the fallopian tube, enter the uterus, and implant itself in the uterus to achieve actual pregnancy.
Mentioned in: Infertility

blastocyst

the mammalian conceptus in the post-morula stage, consisting of the trophoblast, an inner cell mass, and a central, fluid-filled cavity.