Embryonic Stage and Fetal Growth
Development QUESTIONS AND
ANSWERS
Embryonic Stage - ANSWER>>Stage of prenatal development from the end of the
second week to the eighth week
Major Organs and Structures - ANSWER>>Organs and structures that begin to
emerge during the embryonic stage
Teratogens - ANSWER>>Substances that can cause birth defects, such as alcohol
and drugs
Infections - ANSWER>>Diseases caused by microorganisms that can harm the
developing fetus, such as rubella or cytomegalovirus
Radiation - ANSWER>>Energy in the form of waves or particles that can damage
the developing fetus
Nutritional Deficiencies - ANSWER>>Lack of essential nutrients necessary for
proper fetal growth and development
Amniotic Fluid Volume - ANSWER>>The amount of fluid surrounding the fetus,
derived from maternal blood and fetal urine
Fetal Growth and Development - ANSWER>>The process of the fetus developing
and growing during pregnancy
Week 3 - ANSWER>>The beginning of brain, spinal cord, heart, and
gastrointestinal development; appearance of leg and arm buds
, Week 4 - ANSWER>>Differentiation of the brain; further growth of limb buds;
formation of stomach, pancreas, and liver
Week 5 - ANSWER>>Regular heartbeat; development of eye and ear structures;
visible cranial nerves
Week 6 - ANSWER>>Formation of lungs; establishment of fetal circulation;
production of red blood cells by the liver; detectable brain waves
Week 7 - ANSWER>>Straightening of trunk; visible elbows and toes; movement of
arms and legs; detectable fetal heartbeat
Week 8 - ANSWER>>Rotation of intestines; continued development of facial
features; completion of heart development; fetal resemblance to a human being
Week 9-12 - ANSWER>>Continued sexual differentiation; formation of temporary
teeth buds; activity in the digestive system
Fetal Circulation - ANSWER>>The unique circulatory system of the developing
fetus
Ductus Venosus - ANSWER>>A shunt that bypasses the liver and connects the
umbilical vein to the inferior vena cava
Ductus Arteriosus - ANSWER>>A shunt that bypasses the lungs and connects the
main pulmonary artery to the descending aorta
Foramen Ovale - ANSWER>>An opening between the right and left atrium that
bypasses the right ventricle and lungs
Placenta - ANSWER>>Organ that provides oxygen and nutrients to the fetus and
removes waste products
Development QUESTIONS AND
ANSWERS
Embryonic Stage - ANSWER>>Stage of prenatal development from the end of the
second week to the eighth week
Major Organs and Structures - ANSWER>>Organs and structures that begin to
emerge during the embryonic stage
Teratogens - ANSWER>>Substances that can cause birth defects, such as alcohol
and drugs
Infections - ANSWER>>Diseases caused by microorganisms that can harm the
developing fetus, such as rubella or cytomegalovirus
Radiation - ANSWER>>Energy in the form of waves or particles that can damage
the developing fetus
Nutritional Deficiencies - ANSWER>>Lack of essential nutrients necessary for
proper fetal growth and development
Amniotic Fluid Volume - ANSWER>>The amount of fluid surrounding the fetus,
derived from maternal blood and fetal urine
Fetal Growth and Development - ANSWER>>The process of the fetus developing
and growing during pregnancy
Week 3 - ANSWER>>The beginning of brain, spinal cord, heart, and
gastrointestinal development; appearance of leg and arm buds
, Week 4 - ANSWER>>Differentiation of the brain; further growth of limb buds;
formation of stomach, pancreas, and liver
Week 5 - ANSWER>>Regular heartbeat; development of eye and ear structures;
visible cranial nerves
Week 6 - ANSWER>>Formation of lungs; establishment of fetal circulation;
production of red blood cells by the liver; detectable brain waves
Week 7 - ANSWER>>Straightening of trunk; visible elbows and toes; movement of
arms and legs; detectable fetal heartbeat
Week 8 - ANSWER>>Rotation of intestines; continued development of facial
features; completion of heart development; fetal resemblance to a human being
Week 9-12 - ANSWER>>Continued sexual differentiation; formation of temporary
teeth buds; activity in the digestive system
Fetal Circulation - ANSWER>>The unique circulatory system of the developing
fetus
Ductus Venosus - ANSWER>>A shunt that bypasses the liver and connects the
umbilical vein to the inferior vena cava
Ductus Arteriosus - ANSWER>>A shunt that bypasses the lungs and connects the
main pulmonary artery to the descending aorta
Foramen Ovale - ANSWER>>An opening between the right and left atrium that
bypasses the right ventricle and lungs
Placenta - ANSWER>>Organ that provides oxygen and nutrients to the fetus and
removes waste products
