NEW
Font size
WorksheetsModule 2-Fetal Development Review
Total questions: 20
Worksheet time: 10mins
What is the correct sequence of early human development?
Embryo-Zygote-Fetus
Zygote-Embryo-Fetus
Fetus-Embryo-Zygote
Blastocyst-Zygote-Embryo
At what point does the embryo become a fetus?
At fertilization
At implantation
At 4 weeks gestation
9 weeks gestation
Which structure develops into the placenta?
Amnion
Yolk sac
Chorion
Umbilical cord
Which germ layer gives rise to the nervous system and skin?
Endoderm
Mesoderm
Ectoderm
Trophoblast
What is the primary function of the placenta?
Protects the fetus from all infections
Produces fetal urine
Gas, nutrient, and waste exchange between mother and fetus
Produces amniotic fluid
Which fetal shunt allows blood to bypass the liver?
Foramen Ovale
Ductus arteriosus
Ductus venosus
Umbilical artery
Which structure carries oxygenated blood from the placenta to the fetus?
Umbilical arteries
Umbilical vein
Ductus arteriosus
Inferior vena cava
What is the main function of the amniotic fluid?
supplies oxygen to the fetus
cushions the fetus and allows for movement
Forms the placenta
provides fetal nutrition
When do most organs form?
First trimester
Second trimester
Third trimester
at birth
Which factor is MOST critical to normal fetal growth?
Maternal age
Adequate placental blood flow
Fetal gender
Number of previous pregnancies
What is the primary role of the yolk sac in early pregnancy?
Forms the placenta
Produces amniotic fluid
Provides early nourishment and blood cell production
Becomes the umbilical cord
What structure surrounds the fetus and contains the amniotic fluid?
Chorion
Amnion
Decidua
Trophoblast
What happens during implantation?
The ovum enters the uterus
The blastocyst attaches to the uterine wall
The placenta begins to function fully
Fetal circulation begins
Which structure allows blood to bypass the lungs before birth?
Ductus venosus
Umbilical vein
Foramen Ovale
Umbilical artery
What is the function of the umbilical arteries?
Carry oxygenated blood to the fetus
Carry deoxygenated blood away from the fetus to the placenta
Supply blood to the fetal brain
Return blood to the maternal cirulation
During which trimester does the fetus gain the MOST weight?
First trimester
Second trimester
Third trimester
weight gain is equal in all trimesters
Which hormone is produced by the placenta to maintain pregnancy?
Oxytocin
Prolactin
Progesterone
insulin
What best describes a teratogen?
A genetic disorder inherited from parents
A substance that causes adverse effects on fetal development
A normal variation in fetal growth
A hormone produced during pregnancy
Which of the following is an example of a teratogen?
Folic acid
Iron supplements
Alcohol use in pregnancy
prenatal vitamins
Fetal exposure to teratogens is MOST harmful during which period?
Third trimester
Late pregnancy only
Period of organ development in the first trimester
During labour
