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D202 Human Growth and Development
WGU Questions and Answers
Germinal Period Ans: 0-2 Weeks gestation
Fertilization and Implantation of Zygote
Creation of Blastocyst
Mitosis
Blastocyst Ans: Embryo before implantation into uterine wall
Rapidly dividing ball of cells
Zygote Ans: fertilized ovum
Mitosis Ans: Cell division producing two daughter cells with the
same number of chromosomes as the parent cell.
Embryonic Period Ans: 2 weeks-2months gestation
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Placenta forms
Now an embryo
Nutrients and oxygen given from placenta through the umbilical
cord
Sensitive to teratogens because development of life support
systems
Fetal Period Ans: 2 months+
All major structures continue to develop
at 3 months fetus has all its body parts
Viability about 24 weeks
Embryonic Disk Ans: inner group of cells of the blastocyst
embryonic disk
becomes the embryo
Trophoblast Ans: outer group of cells of the blastocyst
trophoblast
becomes the support system nourishing the developing organism
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Viability Ans: able to live independently outside a mother's
uterus
What will blastocyst become? Ans: Embryo
Cephalocaudal Development Ans: Growth from head to tail
Proximodistal Development Ans: Growth from the midline
outward
Teratogens Ans: anything that interferes with normal fetal
development
preeclampsia Ans: high blood pressure
possible damage to liver and kidneys
aka toxemia
Rh Disease Ans: form of anemia caused by a protein
1st Stage of Labor Ans: Braxton hicks
contractions
cervix dilates to 10
discharge of blood or amniotic fluid
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longest part
2nd stage of labor Ans: passing of baby through birth canal
pushing baby out
episiotomy done if necessary
mouth and nose suctioned out
umbilical cord clamped and cut
3rd stage of labor Ans: relatively painless
placenta/afterbirth is delivered within 20 minutes of birth
episiotomy stitched up if needed
APGAR definition Ans: activity
pulse
grimace
appearance
respiration
When is APGAR used? Ans: 1-5 minutes after birth to check
baby's overall condition
© 2025 All rights reserved
D202 Human Growth and Development
WGU Questions and Answers
Germinal Period Ans: 0-2 Weeks gestation
Fertilization and Implantation of Zygote
Creation of Blastocyst
Mitosis
Blastocyst Ans: Embryo before implantation into uterine wall
Rapidly dividing ball of cells
Zygote Ans: fertilized ovum
Mitosis Ans: Cell division producing two daughter cells with the
same number of chromosomes as the parent cell.
Embryonic Period Ans: 2 weeks-2months gestation
© 2025 All rights reserved
, 2 | Page
Placenta forms
Now an embryo
Nutrients and oxygen given from placenta through the umbilical
cord
Sensitive to teratogens because development of life support
systems
Fetal Period Ans: 2 months+
All major structures continue to develop
at 3 months fetus has all its body parts
Viability about 24 weeks
Embryonic Disk Ans: inner group of cells of the blastocyst
embryonic disk
becomes the embryo
Trophoblast Ans: outer group of cells of the blastocyst
trophoblast
becomes the support system nourishing the developing organism
© 2025 All rights reserved
, 3 | Page
Viability Ans: able to live independently outside a mother's
uterus
What will blastocyst become? Ans: Embryo
Cephalocaudal Development Ans: Growth from head to tail
Proximodistal Development Ans: Growth from the midline
outward
Teratogens Ans: anything that interferes with normal fetal
development
preeclampsia Ans: high blood pressure
possible damage to liver and kidneys
aka toxemia
Rh Disease Ans: form of anemia caused by a protein
1st Stage of Labor Ans: Braxton hicks
contractions
cervix dilates to 10
discharge of blood or amniotic fluid
© 2025 All rights reserved
, 4 | Page
longest part
2nd stage of labor Ans: passing of baby through birth canal
pushing baby out
episiotomy done if necessary
mouth and nose suctioned out
umbilical cord clamped and cut
3rd stage of labor Ans: relatively painless
placenta/afterbirth is delivered within 20 minutes of birth
episiotomy stitched up if needed
APGAR definition Ans: activity
pulse
grimace
appearance
respiration
When is APGAR used? Ans: 1-5 minutes after birth to check
baby's overall condition
© 2025 All rights reserved
