development of skeleton

Question 1

the earliest bones to develop

Answer 1

-first ‘long bones’ of a fetus are hyaline cartilage
-earliest ‘flat bones’ of the foetal skull are fibrous membranes
-as fetus grows, all bone models are converted to bone
-the head and trunk are proportionately much longer than the lower limbs

Question 2

puberty bone development

Answer 2

-female pelvis broadens
-entire male skeleton becomes more robust

Question 3

end of adolescence

Answer 3

-epiphyseal plates become fully ossified

Question 4

the skull during birth

Answer 4

-fontanels are fibrous membranes connecting the cranial bones, known as ‘soft spots’
-allow skull compression during birth
-allow the brain to grow during later pregnancy and infancy

Question 5

the skull during childhood

Answer 5

-usually ossify by 2 years of age
-growth of cranium after birth is related to brain growth
-increase in size of the facial skeleton follows tooth development and enlargement of the respiratory passageways

Question 6

time frame of a child’s skull

Answer 6

-2 years old- skull is three-fourths the size of adult skull
-8 or 9 tears old- skull is ner adult in size and proportion
-between ages 6 and 11, the face grows out from the skull

Question 7

the skeleton in older adults

Answer 7

-osteoporosis-bone thinning disease
-this makes bones fragile, bones can easily fracture
-vertebral collapse results in kyphosis
-oestrogen aids in health and normal density of a female skelton