Psyc 210 Quiz 2

amwages's version from 2017-09-30 18:15

Section 1

Question Answer
Cephalocaudaltop to bottom
Proximodistaltrunk to outwards
4 monthsdouble birth weight
nearly triple by first birthday
grow about ¾ inch per month first year
By 2 years infants weighabout 26 to 32 pounds, average 32-35 inches tall
At birth the brain weighsabout 25% of adult weight.
By 2nd birthday the brain weighsabout 75% of adult weight
Cerebral cortexlike a wrinkled cap
Four lobesfrontal lobe, temporal lobe, parietal lobe, occipital lobe
Lateralizationspecialization of function in one hemisphere or the other of the brain
Neuronnerve cells

Section 2

Question Answer
Axoncarries signals away from the cell body
Dendritescarry signals toward cell body
Myelin sheathprovides insulation, helps signals travel faster
Terminal buttonsat the end of axon, release neurotransmitters into synapses
Synapsestiny gaps between neurons
Myelination begins prenatally, continues throughout childhood, into adolescence
Pruningunused connections are replaced by other pathways or disappear; experience and the brain
Typical newborn sleeps 16-17 hours per day
By 6 months, the majority of infants sleep throughout the night
sleep promotesinfant's brain development
Dynamic systems theoryInfants motivated to move by something in the environment

Section 3

Question Answer
SensationOccurs when information interacts with sensory receptors; Eyes, ears, tongue, nostrils, and skin
PerceptionInterpretation of what is sensed