Blastocyst

Blastocyst

The mammalian conceptus in the post-morula stage. It has a fluid filled cavity known as blastoceole and is not limited to one germ layer.

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Part of Speech: noun
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Blossary:
Industry/Domain: Anatomy
Category: Developmental anatomy
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Related terms

blastocyst

Natural environment; Coral reefs

A preimplantation embryo. The blastocyst consists of a sphere made up of an outer layer of cells (trophectoderm), a fluid-filled cavity (blastocoel), and a cluster of cells on the ...

blastocyst

Anatomy; Developmental anatomy

The mammalian conceptus in the post-morula stage. It has a fluid filled cavity known as blastoceole and is not limited to one germ layer.

blastocyst

Biology; Cell biology

The developmental stage of the fertilized ovum by the time it is ready to implant; formed from the morula and consists of an inner cell mass, an internal cavity, and an outer ...

blastocyst

Biotechnology; Genetic engineering

A mammalian embryo (fertilized ovum) in the early stages of development, approximately up to the time of implantation. It consists of a hollow ball of cells.

blastocyst

Health care; Sexual health

The developing pre-embryo shortly before implantation when it is a hollow ball of cells.

blastocyst

Medical; Stem cell research

An early stage embryo of about 100 cells that has not yet implanted into the womb. The blastocyst is a sphere made up of an outer layer of cells, a fluid-filled cavity and cluster ...

trophoblast

Anatomy; Developmental anatomy

A granular protoplasmic body; a plastid, formed from cytotrophoblast, eventually surrounds the entire embryo; insert themselves between uterine epithelial cells, then spread along ...

ventralward

Anatomy; Developmental anatomy

Toward a belly, venter, or ventral aspect.

vertex

Anatomy; Developmental anatomy

The top or crown of the head.

yolk sac

Anatomy; Developmental anatomy

The yolk sac in man contains no nutrients so in this aspect is vestigial. However, the its embryonic endodermal roof is the source of the mucous membrane of almost the entire ...