HDFS 2113 Lecture Notes - Lecture 10: Insomnia, Fastener, Narcolepsy

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Physical and Cognitive Development in Early Childhood
(Chapter 7)
Influences on Physical Growth and health
Heredity and hormones
Emotional well-being
Psychosocial dwarfism
Sleep
Nutrition
Infectious disease
Immunization
Childhood injuries
Children’s physical size and rate of growth are related to those of their parents.
Genes influence physical growth by controlling production of hormones.
Heredity when diet and health are adequate, height and rate of physical growth
are largely determined by heredity.
Body Growth and Change
Height and weight
Average growth is 2.5 inches and 5 to 7 pounds per year during early childhood
Growth patterns vary individually
Two most important contributors to height differences
Ethnic origin and nutrition
Growth hormone deficiency: Produced by the pituitary gland to stimulate the body to
grow
Again we see general growth patterns and are also advised that each child grows at
their own individual rate, both in height and weight. We need these guidelines,
though, so that if a child does vary in some way for an extended time an assessment
can be made for the cause.
Should growth be an issue, medical tests can reveal if there is a deficiency in a
hormone produced by the pituitary gland so that treatment can begin. The growth
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