Term
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Definition
| mitotic divisions from 2 cell zygote |
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Term
| fertilized membrane function |
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Definition
| prevent more sperms from entering egg |
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Term
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Definition
| located near umbilical cord and yolk sac- after birth it forms medial umbilical ligament connecting urin bladder w umbilical cord |
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Term
| hormone responsible for ovulation |
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Definition
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Term
| cause of turners syndrome |
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Definition
| nondisjunction- during crossover, the chromosomes do not separate |
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Term
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Definition
| nondisjunction of autosomal chromosome #21 |
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Term
| embryonic cell responsible for formation of melanocyte |
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Definition
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Term
| derivatives from neurocrest |
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Definition
| ganglia, pia mater, arachnoid mater, schwann cells, melanocyte |
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Term
| critical period of pregnancy |
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Definition
3-8 weeks
organogenesis and teratogens can affect growth |
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Term
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Definition
| Rubella- mothers get mmr vaccination |
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Term
| what week can embryo survive why |
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Definition
| 28 wk- lungs are developed |
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Term
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Definition
produce hCG- in syncytiotrophoblast- for growth of extraembryonic tissue
if extraembryonic tissue growing too much, hydatidiform mole has grown too much and taken over all three layers embryonic layers-choriocarcinoma |
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Term
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Definition
| hydatidiform mole too large- all 3 layers embryo form extraembryonic tissue |
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Term
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Definition
| tumor or problem associated with primitive streak |
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Term
| origin of epithelium of esophagus |
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Definition
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Term
| maternal part placenta derived from? |
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Definition
| deciduas basilis (smooth part placenta- part of endometrium) |
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Term
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Definition
| defect of kidney- amniotic fluid doesnt pass through kidney to be released into amniotic fluid |
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Term
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Definition
GI organ not working- embryo cant swallow amniotic fluid so too much amniotic fluid
esophagealatrasia or urinal constriction |
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Term
| which set limbs develop first |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| no apoptosis between finger webs |
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Term
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Definition
| peritoneal cavity - a cavity within intraembryonic tissue |
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Term
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Definition
| hypoblast forms it- in extraembryonic tissue |
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Term
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Definition
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Term
| chromosome number in primary spermatocyte |
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Definition
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Term
| when does second meiotic division of oocyte complete |
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Definition
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Term
| disease with autosomal defect |
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Definition
| down syndrome #21 autosome |
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Term
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Definition
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Term
| function of umbilical vein |
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Definition
| transfer nutrition to embryo |
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Term
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Definition
| produce progesterone- space inside ovary where graafian follicle left ovary |
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Term
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Definition
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Term
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Definition
| too much extraembryonic growth due to hydatidiform mole |
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Term
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Definition
| implantation outside uterus- fallopian tube or abdomen |
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Term
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Definition
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Term
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Definition
| placenta blocks the internal os of cervix preventing expulsion |
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Term
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Definition
1- contraction/break amniotic membrane- cervix dilated
2-expulsion of baby
3-expulsion of placenta |
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Term
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Definition
maternal endometrium (decidua basilis)
syncytiotrophoblast
cytotrophoblast
connective tissue of embryo (mesenchyme) |
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Term
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Definition
| rubella, thyalidimine, drugs, environmental factors |
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Term
|
Definition
ventralization of neural tube/limb formation
(regulates one thumb and 4 digits on each hand)
-Polarization of limb |
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Term
| paraxial mesoderm derivatives |
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Definition
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Term
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Definition
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Term
| carnegie stages of forelimb development |
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Definition
| associated with stages 12-23 |
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Term
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Definition
| cell differentiation of epiblast-into three germ layers- regulated by primitive streak |
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Term
| epithelia of resp system originate |
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Definition
| endoderm (at one time it was connected to gi system) |
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Term
| common cause of female infertility |
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Definition
| infection leading to obstruction of fallopian tube |
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Term
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Definition
| extraembryonic tissue (syncytiotrophoblast/trophoblast) |
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Term
| c-cells of thyroid gland derived from |
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Definition
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Term
| why carry out amniocentesis |
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Definition
| take fluid from amniotic cavity when pregnancy occuring ot look for birth defects (measure alpha fetal protein) |
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Term
| umbilical cord formed from which cells |
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Definition
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Term
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Definition
embryo up to 8 weeks
fetus 8-37 week |
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Term
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Definition
| add 9 months and 7 days to last menstrual period |
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Term
| volume of amniotic fluid over time |
|
Definition
10 wk 30 ml
20 wk 250 ml
37 wek 1 L |
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Term
| high level alpha feto protein |
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Definition
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Term
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Definition
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Term
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Definition
| one cell one sperm- produce 2 embryos |
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Term
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Definition
| prim streak is starting point of differentiation- epiplast becomes three germ layers |
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Term
| neural tube defect runs in family- what to do with pregnant mom |
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Definition
| monitor pregnancy- mom take fiber- watch alpha fetal protein/avoid teratogens- 50% will have normal birth |
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Term
| gene responsible for shifting forelimb cranially resulting in brachial plexus problem |
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Definition
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Term
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Definition
bleeding from umbilical cord-umbilical vessels detach and fetus not receiving nutrition
-do immediate c-section |
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Term
| 50% conceptions end in spontaneous abortion- why |
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Definition
| 50% of them are chromosomal abnormalities |
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Term
| common cause female pseudohermaphroditism |
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Definition
| adenocortex- hormone problem0 too much testosterone/steroids produced hypertrophy |
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Term
| when oogonia divide by mitosis |
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Definition
| early period of embryo life 4-8 weeks- oocytes formed after 8th week- meiosis from that pt on |
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Term
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Definition
| axial orientation of embryo- maintain cranial-caudal axis |
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Term
| origin of chorion/chorionic cavity |
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Definition
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Term
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Definition
| polarizing activity- maintain 1 thumb 4 fingers each hand |
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Term
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Definition
| pairing of homologus chromosomes in meiosis 1 |
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Term
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Definition
| inner cell mass of blastocyst |
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Term
| initial morphologic change in preparation of gastrulation |
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Definition
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Term
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Definition
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Term
|
Definition
matern: endothelium (decidua basilis)
fetal: villi of trophoblast/chorium |
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Term
| neural tube/crest formed from |
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Definition
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Term
| derivatives of neural tube |
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Definition
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Term
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Definition
| amnion/smooth chorion/deciduas parietalis |
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Term
|
Definition
amniotic cavity
epiblast
hypoblast
yolk sac |
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Term
|
Definition
amniotic cavity surround embryo and yolk sac (except umbilical cord)
yolk sac inferior to endoderm
epiblast endures gastrulation
hypoblast forms extraembryonic tissues |
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