Chap 6 summary Psyc *2450*
*story on Helen Keller
3-4m = teething (1yr=6-8 teeth, 2.5 yr. = appx. 20 teeth)
6m = 20/20, sit without support
15m= build tower of blocks
Growth and Nutrition
Faster period of growth (especially first few months)
3-4m = teething (1yr=6-8 teeth, 2.5 yr. = appx 20 teeth)
Physical growth follows cephocaudal (head to tail) and proximodal (inner to outer)
principle
Nourishment
Breastfeeding
– illnesses prevented or minimized by breastfeeding(baby) = diarrhea,
respiratory infections, oititis media (middle ear infection), staphylococcal,
bacteria and UTIs, and can reduce postneonatal death (28 d – 1y)
– -benefits for mom = less postpartum bleeding, quicker physical recovery,
earlier return to previous weight, less risk of breast cancer n ovarian cancer,
less risk of osteoporosis n hip fractures
- can be dangerous if mother has AIDS(can be transmitted thru milk), any
other infectious illnesses, taking drugs or alcohol
The Brain
CNS – central nervous system – brain and spinal cord
Brain growth spurts – periods of rapid growth and development
PET – positron emission tomography
Lateralization – tendency of each of the brains hemispheres to have specialized
functions (left hem/right)
Left hemisphere – language and logical thinking
Right hemisphere – visual and spatial functions (map reading and drawing)
Brain is composed of neurons and glial cells
Neurons – nerve cells (send receive info)
Glial cells – protect and support
myelination – processes of coating neurons with a fatty substances (myelin) that
enables faster communication between cells reflex behavior – automatic, involuntary, innate responses to stimulation
*once nerves are myelinated, shift to volu
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