Growth and development Flashcards
what prenatal developmental milestones happen in 1 week postconception?
Fertilization and implantation where blastocyt is formed
beginning of embryonic period
what prenatal developmental milestones happen in 2nd week postconception?
Endoderm and ectoderm appear (bilaminar embryo)
amnion started to form
what prenatal developmental milestones happen in 3rd week postconception?
First missed menstrual period; mesoderm appears (trilaminar
embryo); somites begin to form
what prenatal developmental milestones happen in 4th week postconception?
Neural folds fuse
folding of embryo into human-like shape
arm and leg buds appear
crown-rump length 4-5 mm
what prenatal developmental milestones happen in 5th week postconception?
Lens placodes
primitive mouth
digital rays on hands
midbrain, hindbrain and forebrain are evident
what prenatal developmental milestones happen in 9th week postconception?
Fetal period begins
crown-rump length 5 cm
weight 8 g
what prenatal developmental milestones happen in 12th week postconception?
External genitals distinguishable
what prenatal developmental milestones happen in 20th week postconception?
Usual lower limit of viability
weight 460 g; length 19 cm
primitive alveoli have formed and surfactant production has begun; before that time, the
absence of alveoli renders the lungs useless as organs of gas exchange (up to 24th weeks)
what prenatal developmental milestones happen in 25th week postconception?
Third trimester begins;
weight 900 g; length 24 cm
what prenatal developmental milestones happen in 28th week postconception?
Eyes open;
fetus turns head down
weight 1,000-1,300 g
what prenatal developmental milestones happen in 10th week postconception?
The midgut returns to the abdomen from the umbilical cord, rotating counterclockwise to bring the stomach, small intestine, and large intestine into their normal positions
what prenatal developmental milestones happen in 16-20th week postconception?
QUICKENING
What is the anthopometrics of an average term
newborn?
3.4 kg (7.5 lb)
length 50 cm (20 in)
head circumference are about35 cm (14 in)
boys are slightly heavier than girls
What is the autonomic instability in Neonates?
overaroused infants including flushing or mottling, perioral pallor, hiccupping, vomiting,
uncontrolled limb movements, and inconsolable crying
How many percent is the normal weight loss in newborn?
10% (vaginal delivery)
12% (cesarean section) below birthweight in the 1st wk as a result of excretion of excess extravascular fluid and limited nutritional intake