blended - embryo development Flashcards
what happens to zygote after it forms
repeated mitosis = morula
where does the morula go
moved down into the uterus (through fallopian tube)
why does the volume of the morula not increase
zona pellucida
how does a blastocyst form?
Uneven division of morula cells
what is the outer layer of cells on the blastocyst called?
trophoplasts
what does the trophoblast differentiate into?
chorion + placenta
what are the cells on the blastocyst differentiate into
foetus
where does the blastocyst go
It implants into the endometrium
what is the fluid which surrounds the fetus called?
Amniotic fluid
what is the function of amniotic fluid?
Protects the fetus from shock and maintains temperature
what are the two embryonic membranes called
chorion and amnion
what growths does the chorion form?
chorionic villi
what do chorionic villi form
basis of the placenta
