chapter 4 Flashcards
(106 cards)
cephalocaudal
head to tail
growth tends to begin at the top then proceeds downward
proximodistral
growth proceeds from middle of the body outward (trunk and arms grow faster than fingers and hands)
what is growth like in the first year
occurs in spurts rather than steady
during the second trimester of development neurons are growing..
250,000 per minute
it then slows during third trimester….focus of development shifts to organs and to overall size
what recieves neurotransmitters
dendrites
overproduction or exuberance
burst in the production of dendritic connections
three major regions of the brain
hindbrain
midbrain
forebrain
hindbrain
mature earliest….perform basic biological functions for life
two parts of forebrain
limbic system
cerebral cortex
synaptic pruning
dendritic connections that are used become stronger and faster and those that are unused wither away
structure of the limbic system include..
hypothalamus
thalamus
hippocampus
hypothalmus
regulates basic animal functions including hunger, thirst, body temperature, sexual desire, hormone levels
thalamus
acts as a receiving and transfer center for sensory info from body to rest of brain
hippocampus
crucial in memory…especially transfer from short term to long term
cerebral cortex
basis of upper level thinking
outermost part of forebrain
three to four times larger than a chimps, even though our brain is same size
85% of brain weight
lateralization
specialization of functions in the two hemispheres of the brain
(left is for language and processing info in a step by step way.)
(right is for spatial reasoning and processing info in a holistic, integrative way)
corpus callosum
band of neural fibers that allows two hemispheres to communicate
cerebral cortex lobes
frontal
occipital
temporal
parietal
frontal lobe
highest processes, include planning for future and making decisions
parietal lobe
processes bodily sensations
occipital lobe
processes visual information
temporal lobe
processes auditory information, including language
four fs of hypothalamus
fighting, fleeing, feeding and fucking
plasticy
degree to which development can be influenced by environmental circumstances