CAPÍTULO 3: Cálculo de la confiabilidad de un sistema eléctrico
3.3 Análisis de la evaluación de confiabilidad
7–1.
A patient rep rts that the irst day her last menstrual peri d was September 19th. Based n Naegele rule, her due date is whi h the ll wing?a.
July 10thb.
June 14thc.
June 26thd.
De ember 12th7–2.
Pregnan y an be divided int three units r trimesters ea h lasting h w many weeks?a.
12b.
13c.
15d.
167–3.
At the beginning whi h week ll wing ertilizati n is a n eptus termed an embry ?a.
1st weekb.
2nd weekc.
3rd weekd.
4th week7–4.
H w many weeks d es the embry ni peri d last?a.
4b.
8c.
10d.
127–5.
During whi h week devel pment is the primitive heart partiti ned?a.
4th weekb.
6th weekc.
8th weekd.
10th week7–6.
At 10 weeks’ gestati n based n the last menstrual peri d, all EXCEPT whi h the ll wing are true?a.
Arms bend at the elb ws.b.
Cr wn-rump length is 7 m.c.
he upper lip is mplete.d.
Heart is mpletely rmed.7–7.
C rresp nding with midbrain maturati n, when d eye m vements begin?a.
10–12 weeksb.
12–14 weeksc.
14–16 weeksd.
16–18 weeks7–8.
At 28 weeks’ gestati n, what is the han e survival with ut physi al r neur l gi al impairment?a.
10%b.
25%c.
50%d.
90%7–9.
All EXCEPT whi h the ll wing pass thr ugh pla ental tissue by simple di usi n?a.
IgGb.
Waterc.
Oxygend.
Anestheti gases7–10.
What is the average xygen saturati n intervill us spa e bl d?a.
10–20%b.
30–35%c.
65–75%d.
90–95%7–11.
Whi h the ll wing statements regarding the trans er arb n di xide a r ss the pla enta is true?a.
Carb n di xide traverses the h ri ni villus m re sl wly than xygen.b.
Fetal bl d has m re a inity r arb n di xide than maternal bl d.c.
he partial pressure arb n di xide in the umbili al arteries averages 50 mm Hg.d.
Mild maternal hyp ventilati n results in a all in Pco2 levels, av ring a trans er arb ndi xide r m the etal mpartment t maternal bl d.
Embryogenesis a nd Feta l Morphologica l Development CH A P T E R 7
43
7–12.
Whi h the ll wing is und in higher n entrati ns in the m ther than the etus?a.
Ir nb.
Zinc.
As rbi a idd.
Human pla ental la t gen7–13.
Whi h the ll wing maternal immun gl bulins (Ig) rea h the etus?a.
Only IgAb.
Only IgGc.
Only IgMd.
IgA and IgG7–14.
H w is i dide transp rted a r ss the pla enta?a.
End yt sisb.
Simple di usi nc.
Carrier-mediated pr essd.
I dide d es n t r ss the pla enta7–15.
In early pregnan y, amni ni luid is mp sed whi h the ll wing?a.
Fetal urineb.
Fetal pulm nary luidc.
Ultra iltrate maternal plasmad.
Extra ellular luid that di uses thr ugh etal skin7–16.
Amni ni luid v lume peaks at what gestati nal age?a.
24 weeksb.
28 weeksc.
34 weeksd.
38 weeks7–17.
Whi h the ll wing statements regarding the etal ardi vas ular system is true?a.
Fetal heart hambers w rk in series.b.
he p rtal sinus is the maj r bran h the umbili al vein.c.
Oxygen is delivered r m the pla enta by the umbili al artery.d.
he du tus ven sus traverses the liver t enter the in eri r vena ava dire tly.7–18.
A ter birth, the intraabd minal remnants the umbili al vein rm whi h the ll wing?a.
Ligamentum teresb.
Ligamentum ven sumc.
Ligament reitzd.
Umbili al ligaments7–19.
he rder in whi h hem p iesis is seen in the embry / etus r m earliest t latest is whi h the ll wing?a.
Liver, y lk sa , b ne marr wb.
Y lk sa , liver, b ne marr wc.
B ne marr w, liver, y lk sad.
Y lk sa , b ne marr w, liver7–20.
Whi h the ll wing has the l west erythr yte mean ell v lume (MCV)?a.
Embryb.
erm etusc.
Aneupl id etusd.
he MCV remains the same thr ugh ut gestati n7–21.
A etus weighs 3000 g at term. What is the expe ted et pla ental bl d v lume?a.
125 mLb.
250 mLc.
375 mLd.
500 mL7–22.
Where is etal hem gl bin F pr du ed?a.
Liverb.
Y lk sac.
B ne marr wd.
Y lk sa and liver7–23.
In ants attain adult levels IgM at what age?a.
3 m nthsb.
6 m nthsc.
9 m nthsPla centa tion, Embryogenesis, a nd Feta l Development SE C T I O N 3
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7–24.
Whi h the ll wing sequen es rre tly identi ies the b nes labeled in the image?B B
C
A A
M dif ed with permissi n r m Cunningham FG, Leven KJ, Bl m SL, et al (eds): Embry genesis and Fetal M rph l gi al Devel pment. In Williams Obstetri s, 24th ed. New Y rk, M Graw-Hill, 2014, Figure 7-11.
a.
A is the r ntal b ne, B is the parietal b ne, C is the ipital b ne.b.
A is the parietal b ne, B is the ipital b ne, C is the r ntal b ne.c.
A is the temp ral b ne, B is the r ntal b ne, C is the ipital b ne.d.
A is the r ntal b ne, B is the temp ral b ne, C is the parietal b ne.7–25.
In the igure Questi n 7-24, the suture b rdered by the b nes labeled A and B is whi h thell wing?
a.
C r nal sutureb.
Lambd id suturec.
Fr ntal sutured.
Sagittal suture7–26.
Whi h the ll wing sequen es rre tly identi ies the dimensi ns labeled in this image?A C
B
M dif ed with permissi n r m Cunningham FG, Leven KJ, Bl m SL, et al (eds): Fetal Gr wth and Devel pment. In Williams Obstetri s, 22nd ed. New Y rk, M Graw-Hill, 2005, Figure 4-9.
a.
A is sub ipit bregmati , B is ipit r ntal, C is ipit mental.b.
A is ipit r ntal, B is sub ipit bregmati , C is ipit mental.c.
A is ipit mental, B is ipit r ntal, C is sub ipit bregmati .d.
A is ipit r ntal, B is ipit mental, C is sub ipit bregmati .7–27.
Whi h the statements regarding etal swall wing is true?a.
Swall wing begins at 20 weeks’ gestati n.b.
erm etuses swall w between 200 and 760 mL per day.c.
I swall wing is inhibited in late pregnan y, lig hydramni s will ur.d.
Swall wing greatly a e ts amni ni luid v lume, parti ularly in early pregnan y.7–28.
he limits etal viability are determined by whi h the ll wing pr esses?a.
Pulm nary gr wthb.
Kidney rmati nc.
Hepati devel pmentd.
Fetal immun mpeten eEmbryogenesis a nd Feta l Morphologica l Development CH A P T E R 7
45
7–29.
A 25-year- ld G1P0 presents with rupturemembranes at 19 weeks. She subsequently delivers. On hist l gi al evaluati n the lungs the
n nviable etus, y u w uld expe t whi h the ll wing?
a.
Mature alve lib.
N artilage devel pmentc.
Presen e terminal sa sd.
N rmal br n hial bran hing7–30.
Y u deliver an in ant with ambigu us genitalia. During examinati n, y u n te a small phallus that y u suspe t is lit ral hypertr phy. A ph t graph is pr vided bel w. Y u unsel the m ther and rder kary typing. he kary type is 46,XY. he m st likely diagn sis is whi h the ll wing?Repr du ed with permissi n r m Cunningham FG, Leven KJ, Bl m SL, et al (eds): Fetal gr wth and devel pment. In Williams Obstetri s, 23rd ed. New Y rk, M Graw-Hill, Figure 4-20.
a.
rue hermaphr ditismb.
Fetal ar matase de i ien yc.
Male pseud hermaphr ditismd.
C ngenital adrenal hyperplasia7–31.
he hild bel w has a webbed ne k, streak g nads, and genital in antilism. Her m ther rep rts that when pregnant with her, her ultras und wasabn rmal, with luid lle ting n the ba k the hild’s ne k. he m st likely diagn sis is whi h the ll wing?
Repr du ed with permissi n r m Fuster V, Walsh RA, Harringt n RA (eds): Hurst’s T e Heart, 13th ed. New Y rk, M Graw-Hill, 2011, Figure 14-14.
a.
G nadal dysgenesisb.
rue hermaphr ditismc.
Rei enstein syndr mePla centa tion, Embryogenesis, a nd Feta l Development SE C T I O N 3
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7–32.
A w man presents t lab r and delivery a ter having a vaginal birth at h me. She has had n prenatal are. A ter attending t her, y u examine the newb rn. A ph t graph is pr vided. Y u n te a hemis r tum am ng ther things. he likely diagn sis is whi h the ll wing?Repr du ed with permissi n r m Cunningham FG, Leven KJ, Bl m SL, et al (eds): Fetal gr wth and devel pment. In Williams Obstetri s, 23rd ed. New Y rk, M Graw- Hill, Figure 4-21B.
a.
rue hermaphr ditismb.
Fetal ar matase de i ien yc.
Male pseud hermaphr ditismd.
C ngenital adrenal hyperplasiaEmbryogenesis a nd Feta l Morphologica l Development CH A P T E R 7
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CHAPTER 7 ANSw ER KEy