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PSIO 201 Final Exam |Questions with 100% Correct with Solutions
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PSIO 201 Final Exam |Questions with100% Correct with Solutions
cerebral white matter - ANSWER myelinated axons that are bound into large tracts
responsible for communication between cerebral areas and between cerebral areas and
other parts of the brain
association tracts - ANSWER contains axons that conduct nerve impulses between gyri in the
same hemisphere
commissural tracts - ANSWER conduct nerve impulses between corresponding gyri from
one hemisphere to another
projection tracts - ANSWER convey impulses to lower parts of the CNS or visa versa
corpus callosum - ANSWER important commissural tract
thick band of axons that connects corresponding areas of the two hemispheres
left hemisphere - ANSWER reasoning numerical and scientific skills, spoken and
written language, and the ability to use and understand sign language
,right hemisphere - ANSWER musical and artistic awareness, spatial and pattern perception,
recognition of faces and emotional content of language, discrimination of different smells, and
generating mental images of sight, sound, touch, and taste
dendrites - ANSWER collect information
cell body - ANSWER process information
axon - ANSWER propagate information to output site
synapses - ANSWER transmit information to other parts of the nervous system
nucleus - ANSWER cluster of neuronal cell bodies in the CNS
ganglion - ANSWER cluster of neuronal cell bodies in the PNS
tract - ANSWER bundle of axons in the CNS
nerve - ANSWER bundle of axons in the PNS
diencephalon - ANSWER thalamus
hypothalamus
epithalamus
thalamus - ANSWER -relay station for sensory and motor information
-crude interpretation of touch, temperature, pain, pressure
-forms walls of 3rd ventricle
-organized into 7 groups of nuclei
, hypothalamus - ANSWER located inferior to the thalamus
contains ~12 nuclei in 4 major regions (mammillary, tuberal, supraoptic, preoptic)
controls and integrates the activity of the autonomic nervous system and pituitary
gland (homeostasis)
hypothalamus is the link between the nervous system and endocrine system
functions:
-regulates body temperature, eating and drinking behavior, other biological
drives -main control center for visceral functions
-receives information from cerebrum and from brain stem and spinal
cord -regulates emotions (pleasure, pain, aggression)
-regulates diurnal rhythms with help from pineal gland (melatonin)
epithalamus - ANSWER located superior and posterior to the
thalamus -pineal gland (contributes to setting the biological clock) -
habenular nuclei (emotional responses to odors)
cerebellum - ANSWER -receives input from proprioceptors in muscles and tendons about
movement; sends signals to motor cortex to improve and coordinate movements
-receives input from visual and equilibrium receptors and sends input to motor cortex to aid
in regulation of posture and balance
brain stem - ANSWER midbrain
pons
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