Test 2 Flashcards
What are the features of human growth?
- Cephalocaudal principle (baby’s head is big)
- Muscles become longer and thicker
- A layer of fat is added during the first year
- Cartilage is slowly replaced by bone
What is average vs. normal?
Average is the middle and normal is the range.
18 month girls average 24 lbs (normal between 20-28)
What are the mechanisms of physical growth?
- Heredity influences adult height
- The pituitary gland secretes hormone growth
- Nutrition is particularly important during infancy when growth is rapid
- Breastfeeding
- At 2 years, growth slows and kids become picky eaters
Why is breastfeeding best for the baby?
- Sterile
- Temperature
- Vitamins
- Digestion
- Immunity (antibodies from mom)
- Bond with mom
- Less taste fussiness
- Weight management
- Cognitive development
Why is breastfeeding best for the mom?
- Free
- Quick
- Easy
- Decreases breast/ovarian cancer risk
- Strength of bones (decreases osteoporosis risk)
- Pre-pregnancy weight faster
What are the challenges to healthy growth?
- Malnutrition
- Many diseases preventable (vaccines, improved healthcare, lifestyle)
- Failure to thrive (baby is not growing)
- Shaken baby syndrome
- Sudden infant death syndrome
- Accidents
What are the greater risks for SIDS?
- Teenage pregnancy
- Low birth weight
- Premature
- Poor prenatal care
- Males
- 2-4 months old
What can be done to decrease post-natal risks?
- Remove bedding and crib borders
- No smoking
- Do breastfeeding
- Remove mold
- Back to sleep
- After 1 year: childproofing
What is the number one cause of death after age 1?
Accidents
What makes up the cerebral cortex?
- Frontal lobes: personality, plans, emotion, motor, impulse control
- Parietal lobes: somatosensory
- Temporal lobes: hearing
- Occipital lobes: vision
What are the hemispheric specilizations?
- Left hemisphere: language
- Right hemisphere: spatial
What is apart of the developing brain?
- Neuron production begins at 10 weeks after conception
- At 28 weeks, fetus has all neurons it will ever have
- Born with 100 billion neurons
- Brain regions specialize early but continue throughout childhood
- Myelination
- Flexible or neuroplastic brain organization
What are the reflexes?
- Rooting (survival)
- Suck (survival)
- Moro
- Palmar (foundation for later motor behaviour)
- Stepping (foundation for later motor behaviour)
- Babinski
- Tonic-neck
- Breathing
- Blinking (protect)
- Withdrawl (protect)
What is the rooting reflex?
- Baby turns head/mouth toward a touch on cheek/chin/mouth
- Important for locating mother’s nipple in preparation for sucking
What is the moro reflex?
- Startle reflex
- Back arches and legs and arms are flung out and then brought back toward chest, with arms in a hugging motion
- Lose support or loud noise causes this reflex
What is the palmar reflex?
- Reflexively grasp fingers or other objects pressed against palms of hands; use four fingers (no thumbs)
- Precursor to voluntary grasping
What is the stepping reflex?
- Feet reflexively press down on surface when held upright (and thereafter lift up)
- Precursor to voluntary walking
What is the babinski reflex?
- Toes are fanned/spread when underside of foot stroked
What is the tonic-neck reflec?
- When on its back and turns head to one side - arm and leg on the side extend, while limbs on opposite side flex
- Helps baby in rolling later
What are gross motor skills?
Large body movements:
- Lift head
- Lift chest
- Support head
- Roll
- Sit
- Crawl
- Stand with support
- Walk
- Kick
What are fine motor skills?
Small movements of hands and fingers:
- Skills: from first to fingers
- Behaviours (toys, eating, colouring, dressing)
- Age appropriate tools (eating, writing, clothing)
What are the skills: from fist to finger (the fine motor skills)?
- Hold and grasp
- Reach and manipulate
- Thumbs and pincer grasp
- Stack blocks
What is maturation vs experience with motor skils?
Nature:
- Biological maturation (muscles)
- Genes
- Internal motivation (part of temperament, biological disposition, personality)
Nurture:
- External motivation (siblings, parents)
- Opportunity
- Culture
What is the most advanced of all senses at birth?
Touch
How does smell mature?
- React positively to pleasant smalls and negatively to unpleasant ones
- Can recognize mom’s milk
How does taste mature?
- Differentiate salty, sour, bitter, sweet
- Prefer sweet (breastmilk)
How does hearing mature?
- 7-8 month old fetus can hear
- Inferior to adults: Threshold (lowest sound to just detect) is higher for infants (need louder sounds)
- More likely to respond to high pitch
- More likely to sooth with quiet pitch
- Superior to adults: distinguish different sounds in any language
How does vision mature?
- Least mature at birth
- Newborns see at 6 meters what normal adults see at 60-120 meters (just right to see mom/dad face)
- No peripheral vision at birth
- Colour by 4 months
- Depth by 8 months
- Like adults by 1 year
- Experience necessary
When do infants integrate sensory information?
- By 1 month, can integrate sight and touch (put soother in mouth without seeing it)
- By 4 months, can integrate sight and sound
- By 4-7 months, can match facial appearance (boy or man) with sound of voice
What is dynamic perception?
- Focus on movement and change
- Attention period/span is not long
What are the basic principles of Piaget’s theory?
- Schemas
- Assimilation
- Accommodation
- Deferred imitation
- Object permanence