Fetal Development Flashcards
1st trimester is how many weeks?
12-14 weeks ( 1-3 lunar months)
First Lunar Month sign
F - Four weeks AOG
I - Implanted Embryo
R - Rudimentary Heart
S - Spinal cord fusion
T - Three germ layers
How many percent is the embryo implanted during 1st lunar month?
50%
There’s a heartbeat but can’t hear, what do we call this?
Rudimentary heart
1st lunar month
What vitamin is taken by the mother during the 1st lunar month for spinal fusion?
Vitamin B12: folic acid
Without Vitamin B12, the fetus is risk for
Neural tube defect
How many germ layers do we have?
3
Ectoderm (outside)
Mesoderm (middle)
Endoderm (inside)
Ectoderm are the following
E - Eyes, Ears and Nose
C - CNS
T - Touch
O - Opening of the body
Mesoderm are the following
M - Muscular system
E - Enamel of teeth
S - Skeletal system
O - Organs in circulatory system, upper urinary and reproductive system
Endoderm are the following
Lower urinary system
Linings
Lalamunang may TT-TT (throat, tonsils, thyroid, thymus, trachea)
Lungs
Second lunar month signs
S - Sac membrane
E - Extremities
C - Contraction of the heart
O - Organogenesis completed
N - Noticeable face
D - Digestive system
Contraction of the heart is seen where?
Ultrasound
First functioning organ
Heart
In 2nd lunar month, is the fetus swallowing already?
Yes
It swallows amniotic fluid
Third lunar month signs
T - Toothbuds bone ossifies
H - Hear heart sounds
I - Ihi formed
R - Reflex
D - Doppler
How to hear heart sound during the 3rd lunar month?
Use a doppler
Bone ossifies, what should the mother take in?
Calcium 1g a day
Describe urine formed
Small amount (amniotic fluid)
From maternal serum
Sampling is from the chorionic villi sampling
2nd trimester is how many weeks?
14-24 weeks (4-6months)
Fourth lunar month signs
F - Fetoscope/ fine downy hair
O - Ordinary stethoscope
U - Urinates
R - Reveal gender
Fetus urinates into the
Amniotic fluid
How many mL of amniotic fluid is aspirated for amniocentesis?
20mL
Doppler used at
3 months
Stethoscope used at 5 months
Fetoscope used at
4 months
Five Lunar months signs
F - Fetal movements
I - IgG transfer
V - VErnix caseosa
Fetal movements is aka
Quickening
White cheese like in skin
Vernix caseosa
Protect skin
Produce heat: delay bathing
Post term: desquamation (peeling of skin)
Six lunar months sign
“The Special”
Scalp hair
Sound
Surfactant
Survival
The fetus will be able to hear sounds from the outside
Sound, @ 6 months
Surfactant is impotent because it
Prevents alveolar collapse
Should have enough at 38 weeks
Lack of surfactant may have risk for
Respiratory distress syndrome
Age of viability
20-24 weeks, with 500g weight
U
