BACK TO blastula

blastula vs. blastocyst

[ blas-chuh-luh ]
  1. the early developmental stage of an animal, following the morula stage and consisting of a single, spherical layer of cells enclosing a hollow, central cavity.
[ blas-tuh-sist ]
  1. the blastula of the mammalian embryo, consisting of an inner cell mass, a cavity, and an outer layer, the trophoblast.

Compare More Commonly Confused Words