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blastosphere

blastosphere

9.9
A very early embryo formed as a hollow ball of cells with fluid inside before it attaches to the uterus
  • noun
  • /ˈblæstəˌsfɪr/
  • Specialized
translation icon : blastosfera
  • At the blastosphere stage, the embryo is composed of a single layer of cells surrounding a cavity.

Examples

  • Researchers studied the development of the blastosphere in order to better understand early embryogenesis.

  • The formation of the blastosphere represents the first major structural change after fertilization.

  • The blastosphere is crucial for early embryonic development.

  • During the first week, the blastosphere develops rapidly.

  • At the blastosphere stage, the embryo is composed of a single layer of cells surrounding a cavity.

  • Researchers studied the development of the blastosphere to better understand early embryogenesis.

  • The formation of the blastosphere marks the first major structural change after fertilization.

Synonyms

blastocyst
vsblastosphere
  • Specialized
4 9.8

A hollow ball of cells in early pregnancy that forms the embryo and placenta

is the general hollow sphere stage not limited to placental mammals
embryonic stage
vsblastosphere
  • Specialized
1 5.5

An early part of an animal or plant's life when it is still very small

is the specific hollow sphere stage within that broad embryonic phase
blastula
vsblastosphere
  • Specialized
9.8

An early stage of an embryo that is a hollow ball of cells filled with fluid

is the same stage but named with a different term
blastodermic vesicle
vsblastosphere
  • Specialized
9.9

An early stage of a mammal embryo when some cells start to become different

is the hollow sphere stage with a single cell layer

How Developed

fetus
  • Specialized
163 4.1
embryo
  • Specialized
94 4.0
gastrula
  • Specialized
9.3
blastosphere
  • Specialized
9.9
morula
  • Specialized
9.9
zygote
  • Specialized
13 8.2

Surface Forms

blastosphere singular
blastospheres plural

Morphology

blastosphere = sphere (semi-transparent) = blasto + sphere

The combining form 'blasto-' refers to embryonic/bud cells and 'sphere' is transparent, but the technical biological element makes the compound less accessible to general learners.

Etymology

Blastosphere comes from the root blasto- meaning 'bud' or 'sprout' and the part sphere meaning 'ball', so it helps to picture a tiny 'sprouting ball' of cells and refers to the hollow ball of cells in the early embryo.