BLASTOCYST

Pronunciation (US):

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 Dictionary entry overview: What does blastocyst mean? 

• BLASTOCYST (noun)
  The noun BLASTOCYST has 1 sense:

1. the blastula of a placental mammal in which some differentiation of cells has occurred

  Familiarity information: BLASTOCYST used as a noun is very rare.

 Dictionary entry details 

• BLASTOCYST (noun)

Sense 1

Meaning:

The blastula of a placental mammal in which some differentiation of cells has occurred

Classified under:

Nouns denoting animals

Synonyms:

blastocyst; blastodermic vessicle

Hypernyms ("blastocyst" is a kind of...):

blastosphere; blastula (early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs)

 Context examples 

The innermost layer of the cells derived from the inner cell mass of the blastocyst; it gives rise to lungs, other respiratory structures, and digestive organs, or generally "the gut."

(Endoderm, The Titi Tudorancea Bulletin)

The process in which cells proliferate and migrate within the embryo to transform the inner cell mass of the blastocyst stage into an embryo containing all three primary germ layers.

(Gastrulation, The Titi Tudorancea Bulletin)

The cluster of cells inside the blastocyst.

(inner cell mass (ICM), The Titi Tudorancea Bulletin)

Middle layer of a group of cells derived from the inner cell mass of the blastocyst; it gives rise to bone, muscle, connective tissue, kidneys, and related structures.

(Mesoderm, The Titi Tudorancea Bulletin)

The outermost germ layer of cells derived from the inner cell mass of the blastocyst; gives rise to the nervous system, sensory organs, skin, and related structures.

(Ectoderm, The Titi Tudorancea Bulletin)

A cell formed in the first stages of embryonic development, after the splitting of the fertilized ovum, but before the formation of the blastula or blastocyst.

(Embryonic Cell, NCI Thesaurus)

The fluid-filled cavity inside the blastocyst, an early, preimplantation stage of the developing embryo.

(Blastocoel, The Titi Tudorancea Bulletin)

The blastocyst is a sphere made up of an outer layer of cells (the trophoblast), a fluid-filled cavity (the blastocoel), and a cluster of cells on the interior (the inner cell mass).

(Blastocyst, The Titi Tudorancea Bulletin)

Anti-human chorionic gonadotropin vaccine blocks the activity of hCG which is naturally produced by the trophectoderm of the pre-implantation embryo within a few days of fertilization. hCG is required for the maintenance of the corpus luteum in the ovary thus ensuring its continued production of progesterone, which is required for the successful completion of implantation of the blastocyst.

(Anti-human Chorionic Gonadotropin Vaccine, NCI Thesaurus)

A type of pluripotent stem cells derived from early stage human embryos, up to and including the blastocyst stage, that are capable of dividing without differentiating for a prolonged period in culture, and are known to develop into cells and tissues of the three primary germ layers.

(human embryonic stem cell (hESC), The Titi Tudorancea Bulletin)