Download - Chapter 5 Human Growth
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Learning Outcomes:
• describe what growth is,
• identify the characteristics used to measure
growth rate,
• analyse the growth curve for male and
female,
• compare and contrast the growth rate in
male and female,
• describe the effects of nutrition on the
growth in children.
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uman growth
• !rocess of change in si"e,
appearance and function in an
organism
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Changesduring growth
in humans
#i"e
#i"e increases frominfancy to adulthood
$ppearance
$ppearance of aperson changes as
he%she grow
#piritual
development
#piritual changes
occur at different
stages of growth
Cell function
&ach cell withdifferent structures
performs a specific
function
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Growth curve in humans
• 'nfancy
(apid growth
• Childhood
#lower but steady growth
• $dolescence
(apid growth during puberty
• $dulthood
Growth lessens and stops• Old age
)egative growth
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Comparison between males * females
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Comparison
• 'nfancy
Growth rate for a male + female
• Childhood
Growth rate of male female
• &arly $dolescentGrowth rate of female male
• Later $dolescent
Growth rate of male female-emale starts * ends adolescence earlier
ale starts * ends his adolescence later
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)utrient 'mportance
!roteins /uild new cells *tissues
Carbohydrate * -ats !rovide energy
Calcium, !hosphorus* 0itamin 1
/uilding teeth * bones
'ron /uilding red blood cell
0itamins -ight infections
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2eight gain boy vs girl
Childhood $dolescence
$dulthood
'nfancy
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• $part from body weight, height can be used to measure
the rate of human growth.• #tate the period of the most rapid human development.
34 years
• $t which growth stage is the rate of increase in body
weight6a7 in boys and girls almost the same8
349 years
6b7 faster in boys than in girls8
943 years and ; years and above
6c7 faster in girls than in boys8
34; years
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5. 1iscussion activity
. 6!roteins, Carbohydrates7 are needed to supply
more energy to children.. 6-ats, Proteins7 are needed to build new tissues
in the body.
>. <he formation of strong bone and teeth needs6calcium, iodine7.
;. Consuming too much food will lead to 6obesity,
anaemia7.
5. 1e?ciency of protein in children will cause
6ric@ets, kwashiorkor 7.
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Childhood
$dolescence
$dulthood
'nfancy
1iagram
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6a7 <he growth rate in females is same as that
in males at infancy stage.6b7 <he growth rate in females is faster than in
males at adolescence stage.
6c7 <he growth rate in males is faster thanfemales at childhood stage.
6d7 <he rate of growth is the fastest at the
infancy stage.6e7 <he rate of growth in adolescents is faster
than that in children.
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Childhood
$dolescence
$dulthood
'nfancy
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6b7 $t which stage does a human being grow
the fastest8
K/Infancy
6c7 $t which stage does a human being grow
the slowest8
N/Adulthood
6d7 $t which stage does a female grow faster
than a male8
M/Adolescence
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6b7 2hat is the best food for humans at stage !8
otherAs mil@
6c7 $t which stage does a human reach puberty8(%$dolescence
6d7 &Bplain why children need carbohydrates in large =uantities.
Children are very active
!: 'nfancy : Childhood (: $dolescence #: $dulthood