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Embryology And Development
Test Description: Embryology and Development
Instructions: Answer all questions to get your test result.
1) Uterine tissue that covers and surrounds the developing embryo is the:
A
decidua basalis.
B
deciduas parietalis.
C
decidua capsularis.
D
blastocele.
2) The enzymes that allow implantation to occur are produced by the:
A
blastocele.
B
acrosome.
C
cytotrophoblast.
D
syncytiotrophoblast.
3) This is the development of the embryo outside of the uterus.
A
Etopic pregnancy
B
Trophocele pregnancy
C
Trophoblast
D
Fraternal pregnancy
4) Which of the following is the embryonic contribution to the placenta?
A
Chorionic villus.
B
Smooth chorion.
C
Decidua parietalis.
D
Stratum basalis.
5) The moment of TRUE fertilization of the ovum occurs:
A
during the first cleavage of the zygote.
B
when the nuclei of the sperm and ovum fuse together.
C
when the sperm is capacitated.
D
when the sperm breaks through the zona pellucida.
6) Twins formed from two different fertilized eggs are:
A
All of these are correct.
B
fraternal.
C
dizygotic.
D
as different as any 2 siblings.
7) Colostrum is:
A
the area located between the pubic symphysis and the coccyx.
B
the removal of the prepuce or foreskin of the penis.
C
a fluid released at the beginning of breast feeding.
D
the opening to the uterus from the vagina.
8) Muscle, bone and other connective tissues develop from the:
A
endoderm
B
Hensen’s node
C
mesoderm
D
ectoderm
9) A developing human for the first 2 months after fertilization is called a(n):
A
zygote.
B
embryo.
C
neonate.
D
fetus.
10) It is impossible for sperm to be functional (able to fertilize the egg) until after:
A
the tail disappears.
B
they have been stored in the uterus for several days.
C
they become spermatids.
D
they undergo capacitation.
11) The function of the hormone chorionic gonadotropin (hCG) is to:
A
maintain the corpus luteum.
B
cause contractions of the uterus.
C
stimulate milk production.
D
relax the pubic symphysis.
12) The innermost layer of the uterus is called the myometrium.
A
True
B
False
13) The chorion (smooth and villus) develops from the:
A
blastocele.
B
trophoblast.
C
yolk sac.
D
inner cell mass.
14) Oxygenated fetal blood is carried from the placenta to the fetus via the:
A
2 umbilical arteries.
B
1 umbilical vein.
C
1 umbilical artery.
D
2 umbilical veins.
15) The ductus arteriosus of the fetal circulation:
A
shunts blood from the right atrium to the left atrium.
B
shunts blood from the left ventricle to the aorta.
C
shunts blood in the right ventricle to the aorta.
D
shunts blood so it bypasses the liver.
*select an answer for all questions
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