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psych test ch. 2
brain
30
Psychology
Undergraduate 1
09/16/2009

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Term
brain
Definition
source of all our thoughts, feelings, and behaviors
Term
techniques on studying the brain
Definition
clinical observation, manipulating the brain, recording electric activity, neuroimaging.
Term
brainstem
Definition
oldest and central core of brain, automatic survival functions
Term
medulla
Definition
controls heart rate, breathing, and swallowing
Term
pons
Definition
control sleep and arousal
Term
reticular formation
Definition
controls arousal, sleep, and attention
Term
cerebellum
Definition
'little brain', controls coordination, voluntary movement, and rhythm
Term
limbic system
Definition
associated with emotions and drives
Term
thalamus
Definition
relay station for sensory info, all sensory info goes through this
Term
hypothalamus
Definition
regulates eating, drinking, and body temp; reward center
Term
hippocampus
Definition
process memory, important for new info
Term
amygdala
Definition
aggression and fear
Term
cerebral cortex
Definition
controls and processes info for body
Term
frontal and parietal lobes
Definition
handle relationship b/w sensory, motor areas, judgment, and high mental tasks
Term
occipital lobes
Definition
helps control vision
Term
temporal lobes
Definition
involved in hearing
Term
plasticity
Definition
ability to modify itself after some types of damage
Term
corpus callosum
Definition
connects hemispheres of brain
Term
neurons
Definition
nerve cells
Term
sensory neurons
Definition
carry messages from the body's tissues and sensory organs inward to the brain
Term
motor neurons
Definition
carry outgoing messages from the nervous system to muscles
Term
interneurons
Definition
intervene in the other neurons in central nervous system, carries to internal communication system
Term
dendrite
Definition
receives messages from other neurons
Term
cell body
Definition
neurons life support
Term
axon
Definition
passes messages from neuron to neuron and muscles and glands
Term
myelin sheath
Definition
fatty tissue that helps seed up rate of neuro transmissions
Term
threshold
Definition
level of stimulation needed to trigger nerve impulse
Term
action potential
Definition
another term for neural impulse (electrical charge that travels down the axon)
Term
synapse
Definition
gap b/w 2 neurons
Term
neurotransmitter
Definition
chemical messenger
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