INFANCY Flashcards
a period of dramatic physical changes and developmental achievements
infancy
By the time an infant is 5 to 6 months old, their weight is expected to ___ their birth weight.
double (x2)
By the time an infant reaches 1 year of age, their weight is expected to ___ their birth weight.
triple (x3)
the average weight for a 1-year-old infant
9.75 kg
the average weight for a 5- to 6-month-old infant
7.26 kg
First 6 months: average height increase of ___ per month.
2.5 cm / 1inch
Second 6 months: average height increase of ___ per month.
1.25 cm / 0.5 inch
By the end of the first year: An infant’s height typically increases by ___% compared to their birth length
50%
average infant height at 6 mos
65 cm
average infant height at 1 year
74 cm
during the first 3 months, the head circumference increases ___ per month
2 cm
during the 4-5th month, the head circumference increases ___ per month
1 cm
during the 6th month onward, the head circumference increases ___ per month
0.5 cm
average head circumference at 6 mos
43 cm
average head circumference at 1 year
46 cm (33% increase)
at 12 months, there is 2 1/2 increase in ___ weight
brain
true or false - primitive reflexes are diminished by the 12th month
true
when do posterior fontanels close?
6-8 weeks
when do anterior fontanels close?
12-18 mos (ave 14 mos)
true or false - lateral diameter < AP diameter
false - lateral diameter is GREATER THAN ap diameter
by what month does the heart double its weight?
12 mos / 1 year
BY THE END OF THE INFANT PERIOD – the [upper / lower] jaw is prominent
lower
THE CIRCUMFERENCE OF THE ___ – Is less than that of the head at birth by about 2cm
chest
ABDOMEN - remains ___ until the child has been walking
protuberant
___, ___, ___, ___ CURVES - develop as infant hold up their head
cervical, thoracic, lumbar, sacral
true or false - the auditory acuity of an infant is at adult level
true
- fixation of 2 ocular images into
one cerebral picture - develops at 6 weeks
- well established at 4 mos
binocular fixation
- ability to perceive depth or 3D space
- develops at 7-9 mos
depth perception / stereopsis
___ hours after birth infant can smell accurately
1-2
Solid food is introduced as early as ___ mos
6
Respiratory rate slows down from 30-60 breaths/min to ___ breaths/min by the end of the first year
20-30
respi system:
___ proximal to the short bronchi
trachea
respi system:
short straight ___ tube
eustachian