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Question Answer
The neonatal period ranges from _______ to ________.
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Birth to 28 days of age.
Infancy is considered the period from ________ to _______.
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Birth to 12 months old
When describing an infant's growth, what is the term "growth" specifically measuring?
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Any increases in the infant's physical size, height, weight and head circumference
________ is the term for sequential acquisition of various skills and functions.
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Development
_________ is the term for an increase in functionality of various body systems, or an increase in developmental skills.
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Maturation
What is the easiest way to assess development in an infant?
Show Answer
Ask a parent whether a skill is present and when it was obtained.
What is different in the assessment of development for a premature infant?
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The infant's age must be adjusted by the amount of time the baby was early and assessed using the adjusted age. For example, a 6 month old baby born 8 weeks early would be assessed using 4 month old guidelines.
What are the average height, weight & head circumference for a newborn in the US?
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Weight: 7 lbs. 8 0z., Height: 19-21 inches, Head circumference: 13-14 inches/33-35 cm.
At what age does an infant typically double their birth weight?
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6 months (average weight is 15 lbs.)
At what age does an infant typically triple their birth weight?
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At 12 months (average is 23 lbs.)
What is the average rate of growth for an infant in the first six months of life?
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1 inch a month
What is the average rate of growth in height for an infant aged 6-12 months?
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1/2 inch a month
What is the average growth in head circumference for an infant during the first six months of life?
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0.6 inch/1.5 cm growth per month
What is the average growth in head circumference for an infant during the last six months of infancy?
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0.2 inch/0.5 cm growth per month
Newborns lose approximately ____% of their body weight over the first 5 days of life and regain it by 10-14 days of age.
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10%
What does cephalocaudal refer to?
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The acquisition of gross motor skills in an orderly, head to toe fashion.
What does proximodistal refer to when discussing motor skills?
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The acquisition of fine motor skills in an orderly, center to periphery sequence
Myelination of the spinal cord and nerves continues over the first _______ of life.
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Two years
In general, the head circumference of an infant is about _____ inch/inches greater than the chest circumference.
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1 inch (chest circumference is usually 12-13 inches and the head circumference is usually 13-14).
What are the six stages of consciousness identified in newborns?
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Deep sleep-quiet, with no movement, Light sleep-little movement while sleeping, may startle with noise, Drowsiness-eyes may close, dozing, Quiet alert-eyes open wide, calm, Active alert-face and body actively moving, Crying
At what point in utero does the brain start to grow?
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8 weeks in utero, making this a prime time for things to go wrong.
What is the best indicator for brain growth in an infant?
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Increases in head circumference
When does an infant's posterior fontanel typically close?
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Between 2-3 months of age.
The anterior fontanel remains open until an infant is between ______ months to accommodate for brain growth.
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12-18 months
________ reflexes are subcortical reflexes that involve a whole body response.
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Primitive
The ______ reflex is characterized by the infant turning to the side of a stroked cheek, searching with the mouth.
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Root
At what age is the root reflex expected to disappear?
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3 months
The _______ reflex is a reflexive sucking when a nipple or finger is placed in the infant's mouth.
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Suck
At what age is the suck reflex expected to disappear?
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Between 2-5 months
The _______ reflex is activated by a sudden extension of the head. The infant's arms abduct (move away from the body) and move upward, while the hands form a C.
Show Answer
Moro


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