Chapter 3: Physical Development and Biological Aging Flashcards

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1
Q

What is the pattern of growth from the top down?

A

Cephalocaudal

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2
Q

What is the pattern of growth from the inside out?

A

Proximodistal

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3
Q

At what age is the onset of puberty for girls and boys?

A

Girls: 9-15 years
Boys: 10-17 years

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4
Q

What is the hypothalamus?

A

Brain structure involved in eating and sexual behaviour

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5
Q

What is testosterone?

A

Male sexual development hormone

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6
Q

What is estriadol?

A

Female sexual development hormone

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7
Q

Around what age does physical health peak?

A

Mid-twenties

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8
Q

What does the frontal lobe process?

A

Movement, thought, personality, memory, attention, awareness, etc.

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9
Q

What does the occipital lobe process?

A

Vision

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10
Q

What does the temporal lobe process?

A

Hearing, language, memory

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11
Q

What does the parietal lobe process?

A

Spatial location, attention, motor control

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12
Q

What is the corpus callosum?

A

The band of fibres that connect the brain’s hemispheres

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13
Q

What is the amygdala?

A

Brain’s emotional center

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14
Q

As a person ages, their brain’s _____ decreases and they start to rely on _____.

A

Lateralization, adaptation

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15
Q

How much time is spent in REM sleep for infants and adults?

A

1/2 for infants, 1/5 for adults.

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16
Q

What is SIDS?

A

Sudden Infant Death Syndrome. Infant stops breathing, usually during the night, and dies suddenly without apparent cause

17
Q

How much sleep per night is recommended for children?

A

11-13 hours.

18
Q

What are susceptibility and longevity genes?

A

They increase/decrease (respectively) susceptibility to illness and likelihood of living to an old age.

19
Q

What is the cellular clock theory of aging?

A

There is a maximum # of times cells can be divided in the body

20
Q

What is the free-radical theory of aging?

A

Cells metabolize and produce unstable oxygen molecules (free radicals)

21
Q

What is the mitochondrial theory of aging?

A

Aging is caused by the oxidizing decay of the mitochondria.

22
Q

What is the hormonal stress theory of aging?

A

Hormonal system aging lowers resistance to stress and increases risk of disease.