Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Women and Neonatal Health > Ch 12 Conception/Fetal Development > Flashcards

Ch 12 Conception/Fetal Development Flashcards

1
Q

gametogenesis

A

forming gametes
(sperm and egg)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

conception

A

a large event with sequential processes
union of a single egg and a single sperm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

oogenesis

A

the process of egg (ovum) formation
begins in utero
400-500 oocytes mature/ovulate during childbearing years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

spermatogenesis

A

the process of sperm formation
begins at puberty

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

ovum

A

preembryo
has 2 protective layers (zona and corona)
considered fertile for about 24 hrs after ovulation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

sperm

A

200-500 million sperm in a sample of semen

capacitation: removal of sperm’s protective coating, helps egg penetration

acrosome: cap on the sperm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

fertilization

A

egg meets sperm in the ampula of the fallopian tube

zona reaction: prevents additional sperm from penetrating already met egg

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

zygote

A

first cell of the new individual

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

morula

A

16 cells, day 4 post fertilization

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

blastocyst

A

collection of 32 or more cells, trophoblast, embryoblast

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

implantation

A

days 6-10 after fertilization
uterine lining becomes thicker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

ectoderm

A

pituitary gland
nails
hair
skin (epidermis)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

mesoderm

A

bladder
urethra
cardiovascular system
muscles
big organ systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

endoderm

A

linings (of GI, bladder, liver)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

embryo

A

lasts from day 15 until 8 weeks after conception
most critical time for development

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

3 weeks embryonic development

A

CNS and heart

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

4 and 5 weeks embryonic development

A

eyes, heart, limbs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

6 weeks embryonic development

A

ears and teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

7 weeks embryonic development

A

palate and teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

teeth are developed..

A

during 6th and 7th weeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

8th week embryonic development

A

palate, ears, external genitalia

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

palate is developed…

A

during 7th and 8th weeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

9th week fetal development

A

brain and external genitalia

24
Q

external genitalia are developed…

A

during 8th and 9th weeks

25
fetal period
9 weeks to 38 weeks
26
brain is developed...
between 9th and 16 weeks
27
amnion
membrane around embryo contains amniotic fluid (albumin, urine, creatinine, leukocytes, enzymes) protects baby from shock normal fluid amount at delivery: 700-1000cc peeing begins at 11 weeks increased fluid at 9-12 weeks
28
amniocentesis
can do 16-18 wks gestation if mom is Rh-, will need a shot of rhogam at 28 weeks
29
Oligohydramnios
less than 300cc at time of delivery
30
Polyhydramnios
more than 2000mL at time of delivery
31
yolk sac
aids in transferring maternal nutrients and oxygen for first 5-6 weeks folds into itself to become the GI system
32
placenta
takes over at 10-11 weeks fully developed at 12 weeks produces progesterone and estrogen (to maintain uterine lining) and produces HCG
33
HcG
earliest biochemical marker of pregnancy first produced at implantation site, then produced by placenta can detect about 8-10 days after fertilization in moms blood serum HcG level should double every 48 hours really high Hcg=multibaby pregnancy or down syndrome low HcG= ecoptic, miscarriage
34
when should women pee on stick
first pee of the day as close to expected period as possible
35
fetal viability
fetus’s capability to survive outside the uterus 22-24 weeks is threshold of viability
36
37
wharton's jelly
connective goo around the umbilical cord, protecting it from collapse
38
nuchal chord
umbilical chord wrapped around neck
39
ductus venosus
shunts blood from placenta through the liver to the right atrium
40
foramen ovale
shunts blood from right atrium to left atrium
41
ductus arteriosus
shunts mixed blood from the pulmonary artery to the aorta
42
GI system
forms from the yolk sac the gut is sterile (this is why we give vit K injection) starts working around 5th week, functions more around 9th week, fully functioning at 36 weeks (this is is why premature babies are at increased risk for gut infections) meconium produced at 32-34 weeks gestation
43
Respiratory system
alveoli are forming during weeks 16-24 (this is why threshold viability is 22-24 weeks) resp structures begin forming at 4 weeks but are pretty well developed by 14 weeks there is sufficient surfactant at 34 weeks (this is why preemies before 34 weeks get surfactant) fully mature lungs have a 2:1 LS ratio during amniocentesis before 37wks (lecithin/sphingomyelin)
44
Renal system
kidneys form around 5th week and function around 9th week (this is why we see increased amniotic fluid at 9-12 weeks)
45
Neurologic system
begins around 3-4 weeks relies heavily on folic acid for neural tube development
46
Endocrine system
begins development around 3-5 weeks
47
MSK system
comes from mesoderm begins around 4 weeks ossification continues throughout all of childhood
48
Integumentary system
comes form ectoderm lanugo (preemies have a lot) vernix (less in fully mature)
49
dizygotic
from 2 mature ova (2 different eggs released) fraternal twins
50
monozygotic
one mature ova that splits identical twins
51
conjoined twins
monozygotic but cleavage is incomplete (never fully separated) very rare
52
monochorionic and diamniotic
one placenta and two sacs
53
dichorionic and diamniotic
own amniotic sac and own placentas
54
monochorionic and monoamniotic
most dangerous type of twin no amnion separation and share the placenta (no amnion separation increases risk for injury) (twin to twin transfusion syndrome- one twin becomes donor twin and shunts all nutrients to recipient twin. donor twin has fluid volume overload, recipient is not receiving enough nutrients)
55
FETAL CIRCULATION
1. placenta sends oxygenated blood via umbilical vein to the fetus, dropping some blood to the liver shunted by the ductus venosis 2. oxygenated blood enters inferior vena cava and into the right atrium 3. blood flows from right atrium into left atrium through the foramen ovale 4. blood in left atrium goes into left ventricle and out to the body through the aorta 5. deoxygenated blood enters the superior vena cava and goes into the right ventricle (where it mixes w leftover oxygenated blood) 6. mixed blood from right ventricle flows through the pulmonary artery and is shunted by the ductus arteriosis and into the aorta 7. blood flows from the aorta to the placenta via the umbilical arteries
56

Women and Neonatal Health (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions