− | Cells within the '''morula''' continue to divide and a '''blastocyst''' (see above) develops, consisting of an '''inner cell mass''' or (ICM), a '''blastocoele''' cavity and a single layer of '''trophoblast''' cells. As fluid accumulates, the outer cells become flattened and a cavity known as the blastocoele is formed. At this stage, two separate cellular components emerge - the '''inner cell mass''' and the '''trophoblast'''. | + | Cells within the '''morula''' continue to divide and a '''blastocyst''' (see above image) develops, consisting of an '''inner cell mass''' or (ICM), a '''blastocoele''' cavity and a single layer of '''trophoblast''' cells. As fluid accumulates, the outer cells become flattened and a cavity known as the blastocoele is formed. At this stage, two separate cellular components emerge - the '''inner cell mass''' and the '''trophoblast'''. |