Term
| 4 requirements for fertilization to occur? |
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Definition
Viability - viable gametes
Location - gametes must meet
Capacitation of sperm
Acrosome reaction |
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Term
| where does the sperm penetrate? |
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Definition
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Term
| a zygote contains how many chromosomes? |
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Definition
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Term
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Definition
| from the fusion of pronuclei |
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Term
| cleavage is initiated by what? |
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Definition
|
|
Term
| blastomeres are produced by what? |
|
Definition
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Term
|
Definition
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Term
|
Definition
| 3 days after fertilization |
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Term
inner & outer cell mass
form what & contain
what type of cells? |
|
Definition
inner = forms embryo - embryoblast
outer = forms trophoblast |
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Term
|
Definition
4 days after fertilization
(still preimplantation) |
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|
Term
| what day does implantation begin? |
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Definition
|
|
Term
when and where does the
zona pellucida disintegrate? |
|
Definition
in the blastocyst
around 4 to 5 days before implantation |
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Term
| embryoblast forms what 2 germ layers? |
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Definition
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|
Term
| trophoblast forms what 2 tissues |
|
Definition
synciotrophoblast
cytotrophoblast |
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Term
| blastocyst cavity forms into what 2 cavities? |
|
Definition
amniotic cavity
chorionic cavity |
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Term
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Definition
abnormal implantation within the uterus
mother/child will bleed out |
|
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Term
|
Definition
implantation outside the uterus
ex = tubal pregnancy
rectouterine cavity (Douglas' pouch) |
|
|
Term
What is abnormal about a
Hydatidiform mole?
this produces high levels of what hormone? |
|
Definition
contains only trophoblasts
no embryonic tissue = no baby
hCG (human chorionic gonadotropin) |
|
|
Term
| what hormone is used in pregnancy tests? |
|
Definition
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|
Term
| epiblast is made of what kind of cells? |
|
Definition
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|
Term
| hypoblasts contain what type of cells? |
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Definition
|
|
Term
| amnioblasts are found where? |
|
Definition
| in the amniotic cavity within the epiblast |
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|
Term
what day does the embryoblast become a
bilaminar germ disc |
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Definition
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|
Term
on what day does
uteroplacental circulation occur? |
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Definition
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|
Term
| vacuoles are filled with what? |
|
Definition
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Term
who is responsible for making
blood barriers? |
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Definition
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Term
what 2 layers surround the
extraembryonic coelom (chorionic cavity) |
|
Definition
somatopleuric mesoderm
splanchnopleuric mesoderm |
|
|
Term
somatopleuric mesoderm
lines and covers what? |
|
Definition
lines trophoblast
covers amnion |
|
|
Term
splanchnopleuric mesoderm
is around what? |
|
Definition
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|
Term
extraembryonic mesoderm
appears on what day? |
|
Definition
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|
Term
extraembryonic mesoderm
forms between what? |
|
Definition
cytotrophoblast
germ disc
plus amnion and yolk sac |
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|
Term
primary chorionic villi
contain what cells?
what day? |
|
Definition
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|
Term
secondary chorionic villi
is the core of what?
day? |
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Definition
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Term
tertiary chorionic villi
contain what?
which week? |
|
Definition
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