hypoblast

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endoderm

 [en´do-derm]
the innermost of the three primary germ layers of the embryo; from it are derived the epithelium of the pharynx, respiratory tract (except the nose), digestive tract, bladder, and urethra. Called also endoblast, entoderm, entoblast, and hypoblast.

hy·po·blast

(hī'pō-blast),
Cell layer adjacent to the yolk sac cavity and subjacent to the epiblast of a bilayered embryo.
[hypo- + G. blastos, germ]

hypoblast

/hy·po·blast/ (hi´po-blast) the embryonic precursor to the endoderm.hypoblas´tic

hypoblast

(hī′pə-blăst′)
n.

hy′po·blas′tic adj.

hypoblast

[hī′pōblăst]
Etymology: Gk, blastos, germ
the lower layer of the bilaminar embryonic disk in a human embryo, present during the second week, that gives rise to the endoderm.

en·do·derm

(en'dō-dĕrm)
The innermost of the three primary germ layers of the embryo (ectoderm, mesoderm, endoderm); from it are derived the epithelial lining of the primordial gut and the epithelial component of the glands and other structures (e.g., lower respiratory system) that develop as outgrowths from the gut tube.
Synonym(s): entoderm, hypoblast.
[endo- + G. derma, skin]

hypoblast

the innermost germ layer in a GASTRULA.

hypoblast

the entoderm.