Prenatal Development
1st trimester?
1-12 weeks
prenatal development
2nd trimester
13-26
prenatal development
third trimester
27 - 40 weeks
First Trimester: 1st 12 weeks
Germinal - how long what is it ?
Germinal - 0-2 weeks
first trimester 1st - 12 weeks
embryonic period - how long? what is it about ?
2 - 8 weeks
all major systems are established
Spontaneous movements are felt.
Body proportions are equivalent to newborn by week 20.
Suck and swallow reflexes develop
which trimester?
Second Trimester: 13-26 wks
fetal period is generally around
9th week to term (typically 32 weeks)
Body proportions are equivalent to newborn by week 20.
which trimester?
Second Trimester: 13-26 wks
Suck and swallow reflexes develop during which trimester?
2nd: 13 - 26 weeks
Body weight triples.
Length doubles.
Body fat accumulates.
Lungs development accelerates from 31 weeks to birth
Body temperature regulation develops
Third Trimester: 27-40 weeks
Lungs development accelerates from 31 weeks to birth
which trimester?
3rd trimester: 27-40 weeks
Body weight triples.
Body Length doubles.
Body fat accumulates.
Body temperature regulation develops.
which trimester?
3rd trimester: 27-40 weeks
External Influenceson fetal development
TORCHHS
Toxoplasmosis
Other Infections
Rubella
Cytomegalovirus Infection
Human Immunodeficiency Virus
Herpes Simplex Virus
Syphilis
External Influenceson fetal development
T
Toxoplasmosis
External Influenceson fetal development
O
Other Infections
External Influenceson fetal development
TORCHHS
R
Rubella
External Influenceson fetal development
TORCHHS
C
Cytomegalovirus Infection
External Influenceson fetal development
TORCHHS
H
H
Human Immunodeficiency Virus
Herpes Simplex Virus
External Influenceson fetal development
TORCHHS
S
Syphilis
External Influenceson fetal development
Toxoplasmosis
Other Infections
Rubella
Cytomegalovirus Infection
Human Immunodeficiency Virus
Herpes Simplex Virus
Syphilis
TORCHHS
External Influenceson fetal development
That isn’t TORCHHS
Cigarette smoke
Alcohol
Caffeine
Medications/Illegal drugs
Chronological age vs Corrected chronological age
how long since baby was born = CA
how long since baby was born - amount of weeks it missed in gestation = CCA