inner cell mass

(redirected from embryoblast)
Also found in: Medical.

inner cell mass

[¦in·ər ′sel ‚mas]
(embryology)
The cells at the animal pole of a blastocyst which give rise to the embryo and certain extraembryonic membranes.
References in periodicals archive ?
At the stage of 8 blastomeres, the blastocyst divides into embryoblast and trophoblast.
The blastocyst, the structure common to all the mammals, is composed of the embryoblast and the trophoblast [3].
After fertilization the human blastocyst is embedded in the endometrium which is composed of trophoblast and embryoblast. The trophoblast with maternal origin differentiates into cytotrophoblast and syncytiotrophoblast.