HGD 4 STUDY Questions And Answers
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Cindy is doing a presentation on prenatal development. Cindy's presentation will focus on the
following three periods, in the order of ______.
fetal, embryonic, and germinal
germinal, fetal, and embryonic
germinal, embryonic, and fetal
embryonic, germinal, and fetal - Answer✔germinal, embryonic, and fetal
During the germinal period, the first task of the zygote's outer cells is _____.
germination
implantation
differentiation
duplication - Answer✔Implantation
About a week after conception, the outer layer of the multiplying cells forms a protective circle,
or shell, that will become the _____.
placenta
umbilical cord
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vernix
infant - Answer✔placents
The germinal period ends approximately _____ after conception.
2 days
12 weeks
2 weeks
3 months - Answer✔2 weeks
The ____ period lasts from the third week through the eighth week of pregnancy.
germinal
fetal
embryonic
viability - Answer✔embryonic
Which of the following structures develops first during the period of the embryo?
the primitive streak
the placenta
the neural tube
the upper arms - Answer✔the primitive streak
During the embryonic period, the neural tube will become the _____.
intestinal tract
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central nervous system, brain, and spinal cord
reproductive organs
backbone, legs, and arms - Answer✔central nervous system, brain, and spinal cord
In the fourth week after conception, a miniscule blood vessel that will become the _____ begins
to pulsate.
lungs
heart
kidneys
stomach - Answer✔heart
Growth occurs in a _____ pattern, which means "head-to-tail."
cephalocaudal
proximodistal
neurogenesis
synaptogenesis - Answer✔cephalocaudal
Prenatally, development happens in a near-to-far pattern known as "_____."
neurogenesis
cephalocaudal
proximodistal
synaptogenesis - Answer✔proximodistal
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