c.h.i.l.d foundation prenatal development growing fetus reflexes senses by drina madden
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Prenatal Development• Growing fetus
• Reflexes• Senses
By Drina Madden
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Prenatal Development
The beginning of life
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Prenatal Development
The period of the embryo
28 days 36 days
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Prenatal Development
The period of the embryo
48 days 54 days
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Prenatal Development
The period of the fetus
Eleventh Week
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Prenatal Development
Fetus - 24 weeks
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Fetus – 8 months
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Prenatal Development
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Reflexes
First responses 5 weeks after conception
Upper lip touch = withdrawal response Few days later
Sensitivity has spread to palms and soles of feet Before 9 weeks
Sensitivity has spread to whole body
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Reflexes
9 weeks in utero Withdrawal reactions lessen Primitive reflexes appear Neural development determines timing
Appearance Inhibition
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Reflexes
Primitive Reflexes Insure protection outside the womb Automatic, stereotyped movements directed
from the brain stem No cortex involvement
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Reflexes
Primitive Reflexes Essential for survival in first 2 weeks of life Lay foundation for all later functioning If remain after 6 – 12 months = brain
development weaknesses or immaturity
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Reflexes
Primitive Reflexes – brain stem dominated
Rooting Reflex – searching sucking and swallowing
Moro or Startle Reflex – response to outside stimuli
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Reflexes
Primitive Reflexes
Asymmetrical Tonic – muscle tone, vestibular awareness
Palmar – grasp reflex
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Reflexes
Postural Reflexes Form the framework for effective operation of
other systemsPostureMovementStability
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Reflexes
Postural Reflexes - rolling
Neck Righting Reaction
Labyrinth Righting Reaction
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Brain Development
Connections grow through nature and nurture
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Brain Development
Heredity and experiences increase connections
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Brain Development
Electrical activity increases with brain growth gained through experience
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Brain Development
As the body grows – the brain grows
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Brain Development
The lower brain – attention and mood
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The Senses
Touch begins in utero
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The Senses
Vestibular – balance and awareness in space
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The Senses
Hearing begins in utero and strongly connects to neonatal life
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The Senses
Taste begins to connect at birth
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The Senses
Vision is the last sense to complete its journey
In time, sharing occurs
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The Senses
Vision connects with language and perception
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The Senses
Language needs receiving and sending
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After Birth
Attention and mood govern development
Each of the brain lobes grows separately.
Connections begin to reach to other lobes
The child’s brain grows in awareness and flexibility