Fertilisation

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Day 1
Eggs leaves ovary and travels to the oviduct with the aid of fimbraie.
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Day 2
Fertilised egg begins to divide into two cells. By the end of the day there are 8 cells.
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Day 3 + 4
Cells continue moving and dividing
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Day 5
Ball of cells now known as a morula. Morula becomes hollow by pumping fluid into the centre = Blastocyst.
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Blastocyst
Hatches from the Zona pellucia
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Zona pellucia
Thick transparent membrane surrounding the ovum before implantation. Once the blastocyst has hatched it is able to embed into the uterine wall.
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Day 6
Inner cell mass forms as well and exterior cells which contribute to placenta.
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Day 7
Cells on the inside become primitive ectoderm (Stem cells)
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Other cards in this set

Card 2

Front

Fertilised egg begins to divide into two cells. By the end of the day there are 8 cells.

Back

Day 2

Card 3

Front

Cells continue moving and dividing

Back

Preview of the back of card 3

Card 4

Front

Ball of cells now known as a morula. Morula becomes hollow by pumping fluid into the centre = Blastocyst.

Back

Preview of the back of card 4

Card 5

Front

Hatches from the Zona pellucia

Back

Preview of the back of card 5
View more cards

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