1082354
Beschreibung
Mindmap von whsaltosax, aktualisiert more than 1 year ago
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Erstellt von whsaltosax
vor mehr als 11 Jahre
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Fertilization
- Occurs in the ampulla of the uterine tube
- 15-30% have infertility resulting in 1% of live births
- 15-30% have infertility resulting in 1% of live births
- Fusion of pronuclei
- Division of blastomeres forming morula and new
tight junctions to allow for fluid buildup around inner
cell mass = embryo and outer cell mass =
trophoblast (placenta)
- hCG secreted if pregnancy
occurs (secreted by
syncitiotrophoblast)
- Ectopic pregnancy common in
ampullary region of uterine tube or
in Rectouterine (Douglas') pouch
- Ectopic pregnancy common in
ampullary region of uterine tube or
in Rectouterine (Douglas') pouch
- No pregnancy ->
corpus luteum
regresses, eliminating
progesterone and
beginning menstration
- Basal layer regenerates for next cycle
- Basal layer regenerates for next cycle
- Blastocyst (consisting of
inner, outer, and fluid)
- Trophoblast
- Cytotrophoblast (makes
cells)
- Form extraembryonic mesoderm which form
tertiary villi and surround amnion and yolk
sacs
- Somatic Mesoderm
- Splanchnic Mesoderm
- Chorionic Cavity between
but coninuous at the
umbilical region
- Somatic Mesoderm
- Form extraembryonic mesoderm which form
tertiary villi and surround amnion and yolk
sacs
- Syncytiotrophoblast
(forms syncytium)
Responsible for
invasion of
blastocys in uterine
endometrium and
hormone production
- Attach to tertiary villi resulting in
maternal-embryonic blood flow
(connection to mother can lead to
bleeding, often mistaken for menstruation)
- Attach to tertiary villi resulting in
maternal-embryonic blood flow
(connection to mother can lead to
bleeding, often mistaken for menstruation)
- Forms villi for placenta
- Primary villi = core of
cytotrophoblast coverred by
syncytiotrophoblast
- Secondary villi = core of
extraembryonic mesoderm,
covered by cytotrophoblast,
covered y with each other and to
umbilical vessels to form the fetal
circulation
- Secondary villi = core of
extraembryonic mesoderm,
covered by cytotrophoblast,
covered y with each other and to
umbilical vessels to form the fetal
circulation
- Primary villi = core of
cytotrophoblast coverred by
syncytiotrophoblast
- Cytotrophoblast (makes
cells)
- Embryo at one pole
- Forms Germ Disk with
2 Layers
- Epiblast
- Amniotic cavity on
dorsal side forms
- Will form 3 germ layers
- Amniotic cavity on
dorsal side forms
- Hypoblast
- Yolk sac cavity on
ventral side forms
- Disappears during Gastrulation
- Yolk sac cavity on
ventral side forms
- Epiblast
- Forms Germ Disk with
2 Layers
- Trophoblast
- hCG secreted if pregnancy
occurs (secreted by
syncitiotrophoblast)
- Division of blastomeres forming morula and new
tight junctions to allow for fluid buildup around inner
cell mass = embryo and outer cell mass =
trophoblast (placenta)
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