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Multiple Choice Quiz
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Please answer all questions

1
The prenatal period lasts _____.
A)266 days
B)36 weeks
C)9 lunar months
D)10 lunar months
2
Which of the following is true of blastomeres?
A)found in an embryo
B)have a zona pellucida
C)divide by cleavage
D)are produced by meiosis
3
Which of these is the first to develop?
A)blastocyst
B)embryo
C)morula
D)fetus
4
Which of these is not true of implantation?
A)involves a blastocyst
B)is in the uterine tube
C)has cells that produce HCG
D)occurs by sixth day
5
In the process of in vitro fertilization, the woman is given _____ to induce follicle development.
A)HCG
B)human menopausal gonadotropin
C)progesterone
D)FSH
6
The embryonic period lasts from the second week through _____ week.
A)third
B)fourth
C)eighth
D)twelfth
7
All of these arise from mesoderm except which one?
A)muscle
B)brain
C)kidney
D)blood
8
Which of these is not an endodermal derivative?
A)urinary bladder
B)urethra
C)lining of stomach
D)epidermis
9
What prevents the maternal and embryonic blood cells from mixing?
A)chorionic villi
B)placental membrane
C)lacunae
D)trophoblast
10
When would drugs or radiation produce the greatest harm?
A)early fetus
B)in the ninth week
C)fourth week
D)late pregnancy
11
When will the embryo take on a human appearance?
A)eighth week
B)fourth week
C)second fetal month
D)sixth week
12
Which of these is a maternal component?
A)chorion
B)amnion
C)decidua basalis
D)umbilical cord
13
When does the amnion first appear?
A)first week
B)second week
C)fifth week
D)sixth week
14
What is the origin of fetal blood cells?
A)chorion
B)amnion
C)yolk sac
D)allantois
15
What is the major cell process in the fetus?
A)differentiation
B)meiosis
C)mitosis
D)cleavage
16
When can the male and female organs be distinguished first?
A)eighth week
B)10th week
C)twelfth week
D)fourth month
17
Which of the following is not true at full term?
A)testes begin to descend
B)fingernails are present
C)vertex position is evident
D)fetus is 50 cm long
18
The main factor that may not allow a 24 week fetus to survive independently is the _____.
A)strength of the heart
B)nervous system maturation
C)surfactant
D)ability to move
19
The ductus venosus transports blood to the _____.
A)placenta
B)heart
C)liver
D)vena cava
20
The foramen ovale allows blood from the right atrium to enter the _____.
A)left ventricle
B)left atrium
C)aorta
D)right ventricle
21
Large amounts of blood do not enter the fetal lungs because their _____.
A)pressure is too high
B)development is immature
C)resistance is high
D)arteries are closed
22
The ductus arteriosus allows blood to flow from the pulmonary trunk to the _____.
A)lungs
B)liver
C)aorta
D)right atrium
23
The umbilical arteries are branches of the _____.
A)ductus venosus
B)inferior vena cava
C)internal iliac arteries
D)external iliac arteries
24
Which of these has the greatest oxygen content?
A)umbilical arteries
B)umbilical vein
C)fetal aorta
D)fetal pulmonary veins
25
Which function is most critical in the neonate?
A)liver
B)cardiac
C)respiratory
D)gastrointestinal
26
Which of these is not a significant factor explaining what causes the first breath of life?
A)blood pH
B)neonatal adrenalin
C)carbon dioxide
D)low blood oxygen
27
In the first days of life, what is the primary source of energy?
A)glucose
B)protein
C)lipid
D)glycogen
28
The superior vesical arteries are remnants of the _____.
A)umbilical arteries
B)umbilical vein
C)ductus venosus
D)ductus arteriosus
29
The ligamentum teres is the remnant of the _____.
A)umbilical cord
B)umbilical vein
C)ductus arteriosus
D)umbilical artery
30
The ligamentum venosum is the remnant of the _____.
A)liver
B)ductus arteriosus
C)ductus venosus
D)umbilical vein
31
The reason why blood no longer passes through the foramen ovale, is initially explained by the _____.
A)increase in lung resistance
B)increase in right atrial pressure
C)decrease in left atrial pressure
D)increase in left atrial pressure
32
The constriction of the ductus arteriosus is related most likely to _____.
A)pressure in the aorta
B)bradykinin
C)low oxygen tension
D)pressure in the lungs
33
The period of infancy ends at _____.
A)two months
B)two years
C)one year
D)18 months
34
When is most hemoglobin of the adult type?
A)in the child age 1
B)at four months
C)at seven months
D)in 18 months
35
After age 30, the adult loses about ____% of their functional capacity each year.
A)0.8
B)1.8
C)10
D)0.1
36
The chemical theory of aging involves the formation of _____.
A)defective proteins
B)less glycogen
C)free radicals
D)less DNA
37
The premature separation of the placenta is _____.
A)amniocentesis
B)abruptio placentae
C)meconium
D)lochia
38
Perinatology is a branch of medicine that studies the _____.
A)mother's progress
B)10 week fetus
C)twenty-five week fetus
D)fetus and neonate
39
Which of the following is not able to freely cross the placental membrane?
A)leukocytes
B)glucose
C)NaCl
D)erythrocytes







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