Chapter 5 Child Development

cephalocaudal pattern

the fastest growth occurs at the top; physical growth and feature differentiation gradually work from top to bottom

proximodistal pattern

growth starts at the center of the body and moves toward the extremities

part of the head that grows the slowest

the jaw

how long is the average north american newborn?

20

average size for 2 years old

26-32

two key patterns of human growth

cephalocaudal and proximodistal

what nerve cells are also referred to as

neurons

fNIRS purpose

uses very low levels of near infra red light to monitor changes in blood oxygen to study infants brain activity

by age two a childs brain is _ percent of its adult weight

75

average infant height at 2 years old

32-25

how many nerve cells does an infants brain contain at birth

100 billion

least likely to be used to measure an infants brain activity

sonogram

newborns brain is about _ percent of its adult weight

25

growth of infants in the first year of life

1. by the first birthday infants are approximately triple their birth weight

2. infants increase their birth length about 1.5 times by their first birthday

true or false: the different areas of the brain mature uniformly

false

how much body weight do newborns lose in the first few days after birth?

5-7%

how many hours per day must infants sleep to maintain optimal health for the first few months of life

18