test nov 18 Flashcards
average child growth
grows 2 to 3 inches and gains 5 pounds per year
body proportions change
appear more slim as trunks lengthen
ectomorph
body structure that is very slim
mesomorph
medium bones
endomorph
large bones
urban children
in middle socioeconomic status
firstborn children are taller than rural, lower socioeconomic status and later born
black children
tend to be taller than white children
possible causes of shortness
genetic and prenatal problems mothers who smoked regularly during pregnancy physical problems emotional difficulties abuse, neglect
epiphyses
growth center in which the cartilage hardens into
baby teeth
babies begin to lose them at the end of early childhood
5-6 years of age
28% of U.S. preschoolers have tooth decay
cerebral cortex
where energy metabolism reaches its peak
by age 3
brain is 3/4 adult size. brain is super dense
by age 5
brain is 9/10 adult size
corpus collosum
composed of white matter
humunculous
“little man” -a small representation of a human
reticular formation
(reticular activating system)
takes stimuli and decides which direction it will go