EMBRYOLOGY Flashcards
1
Q
what is a zygote
A
fertilised embryo
2
Q
what is cleavage
A
a series of divisions that the zygote undergoes
3
Q
what is the zona pellucida
A
the proteinaceous shell that the divisions of the zygote happen inside of
4
Q
what are blastomeres
A
the cells that form from the division of the zygote (cleavage)
5
Q
describe the formation of the morula
A
after the 3rd cleavage, the blastomeres maximise their contact with each other and form a tight ball of cells. the compaction process causes the inner cells to become separated by the outer cells. the ball of cells is called the morula
6
Q
what is a blastocyst
A
a hollow sphere of cells that is formed when all the spaces between morula cells merge together to create one big space
7
Q
A
