Milestones in Fetal Development(with solved solutions)
Stages of Development correct answersWeek 0-3: Death of embryo may occur
• Week 3-8: Period of max sensitivity to
abnormal development, malformation of
embryo may occur (heart defect)
Week 8-38: Growth and maturation of
organ systems, functional disturbance of
fetus may occur (mental retardation)
Month 1: First Trimester correct answersAt end of 4 weeks: Baby is .25 inch in
length
• Heath, digestive system, backbone and
spinal cord begin to form
• Placenta (sometimes called afterbirth)
begins to develop
• Single fertilized egg is now 10,000
times larger than size at conception
• RE: URINE TESTING: Most doctors
recommend waiting until first day of
missed period before taking a urine
pregnancy test. This is usually about
two weeks after conception.
Month 2: First Trimester correct answersAt the end of 8 weeks: Baby is 1-1/8" long!
• Heart is functioning!
• Eyes, nose, lips, tongue, ears & teeth are
forming!
• Penis begins to appear in boys!
• Baby is moving, although mother cannot
feel movement yet
Month 3: First Trimester correct answersAt end of 12 weeks: Baby is 2.5-3 inches
long!
• Weight: about 0.5-1 oz!
• Baby develops to recognizable form, nails
start to develop and earlobes are formed!
• Eyes are almost fully developed!
• Baby has developed most of his/her
organs and tissues!
• Baby's HR can be heard @ 10 weeks w/
Doppler
Month 4: Second Trimester correct answers• At end of 4 months: Baby is 6.5-7" long!
• Weight: 6-7oz !
• Baby is developing reflexes (suckling &
, swallowing) & may begin sucking thumb!
• Tooth buds developing, sweat glands
forming on palms & soles!
• Fingers & toes well defined!
• Sex is identifiable!
• Skin is bright pink, transparent & covered
with soft, downy hair
Although recognizably human in
appearance, baby would not be able to
survive outside mother's body
Month 5: Second Trimester correct answersAt end of 5 months: Baby is 8-10" long!
• Weight: ~1 pound!
• Hair begins to grow on baby's head!
• Soft wooly hair (lanugo) will cover its
body. Some may remain until week after
birth, when its shed!
• Mother begins to feel fetal movement!
• Internal organs maturing!
• Eyebrows, eyelids & eyelashes appear
Month 6: Second Trimester correct answersAt end of 6 months: Baby is 11-14" long!
• Weight: ~ 1.75-2 lbs!
• Eyelids begin to part and eyes open
sometimes for short periods of times!
• Skin is covered with protective coating
called vernix!
• Baby is able to hiccup
• Month 7: Third Trimester correct answersAt end of 7 months: Baby is 14-16" long!
• Weight: ~2.5-3.5 lbs!
• Taste buds have developed, fat layers
forming, organs maturing!
• Skin is still wrinkled and red!
• If born at this time, baby will be
considered premature baby and require
special care
Month 8: Third Trimester correct answersAt end of 8 months: Baby is 16.5-18" long!
• Weight: ~4-6 lbs!
• Overall growth is rapid this month!
• Tremendous brain growth occurs at this
time!
• Most body organs are now developed
with exception of lungs!
• Movements or kicks are strong enough to
Stages of Development correct answersWeek 0-3: Death of embryo may occur
• Week 3-8: Period of max sensitivity to
abnormal development, malformation of
embryo may occur (heart defect)
Week 8-38: Growth and maturation of
organ systems, functional disturbance of
fetus may occur (mental retardation)
Month 1: First Trimester correct answersAt end of 4 weeks: Baby is .25 inch in
length
• Heath, digestive system, backbone and
spinal cord begin to form
• Placenta (sometimes called afterbirth)
begins to develop
• Single fertilized egg is now 10,000
times larger than size at conception
• RE: URINE TESTING: Most doctors
recommend waiting until first day of
missed period before taking a urine
pregnancy test. This is usually about
two weeks after conception.
Month 2: First Trimester correct answersAt the end of 8 weeks: Baby is 1-1/8" long!
• Heart is functioning!
• Eyes, nose, lips, tongue, ears & teeth are
forming!
• Penis begins to appear in boys!
• Baby is moving, although mother cannot
feel movement yet
Month 3: First Trimester correct answersAt end of 12 weeks: Baby is 2.5-3 inches
long!
• Weight: about 0.5-1 oz!
• Baby develops to recognizable form, nails
start to develop and earlobes are formed!
• Eyes are almost fully developed!
• Baby has developed most of his/her
organs and tissues!
• Baby's HR can be heard @ 10 weeks w/
Doppler
Month 4: Second Trimester correct answers• At end of 4 months: Baby is 6.5-7" long!
• Weight: 6-7oz !
• Baby is developing reflexes (suckling &
, swallowing) & may begin sucking thumb!
• Tooth buds developing, sweat glands
forming on palms & soles!
• Fingers & toes well defined!
• Sex is identifiable!
• Skin is bright pink, transparent & covered
with soft, downy hair
Although recognizably human in
appearance, baby would not be able to
survive outside mother's body
Month 5: Second Trimester correct answersAt end of 5 months: Baby is 8-10" long!
• Weight: ~1 pound!
• Hair begins to grow on baby's head!
• Soft wooly hair (lanugo) will cover its
body. Some may remain until week after
birth, when its shed!
• Mother begins to feel fetal movement!
• Internal organs maturing!
• Eyebrows, eyelids & eyelashes appear
Month 6: Second Trimester correct answersAt end of 6 months: Baby is 11-14" long!
• Weight: ~ 1.75-2 lbs!
• Eyelids begin to part and eyes open
sometimes for short periods of times!
• Skin is covered with protective coating
called vernix!
• Baby is able to hiccup
• Month 7: Third Trimester correct answersAt end of 7 months: Baby is 14-16" long!
• Weight: ~2.5-3.5 lbs!
• Taste buds have developed, fat layers
forming, organs maturing!
• Skin is still wrinkled and red!
• If born at this time, baby will be
considered premature baby and require
special care
Month 8: Third Trimester correct answersAt end of 8 months: Baby is 16.5-18" long!
• Weight: ~4-6 lbs!
• Overall growth is rapid this month!
• Tremendous brain growth occurs at this
time!
• Most body organs are now developed
with exception of lungs!
• Movements or kicks are strong enough to
