CH 5.1: Healthy Growth Flashcards
Rule of thumb regarding children’s height
Boys achieve half their adult height by 2 years old; girls by 18 months old
9 cut-off point terms for children 0-2yrs old
underweight
severely underweight
stunting
severe stunting
wasting
sever wasting
risk of overweight
overweight
obesity
toddlers have a disproportionately large what?
head and trunk
true or false: all of the body’s muscle fibres are present at birth
true
describe the changes in body fat from baby - preschool - elementary - adolescence
baby: baby fat accumulates
preschool: become leaner
elementary: put fat on gradually
adolescence: put fat on more rapidly
when does bone begin to form in humans?
prenatal development
epiphyses
ends of the cartilage structures that turn into bone
secular growth trends
changes in physical development from one generation to the next that are related to env. factors
average vs normal (in terms of development)
an average is a specific point, but many other values are considered as normal. “normal” is generally a range of values/time.
3 factors of physical growth
heredity
hormones
nutrition
true or false: both parents contribute equally to their child’s height
true
correlation between parents height and their child’s height
about 0.7
is correlation of height between identical or fraternal twins usually higher than the other?
identical>fraternal
which gland secretes growth hormone?
pituitary gland
which hormone causes muscles and bones to grow?
somatomedin