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Central Nervous System (Cerebrum (occipital lobe (contains the visual…
Central Nervous System
Spinal Cord
filum terninale
filament of connective tissue, attaches to coccyx, anchors spinal cord in place
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CNS Protection
subarachnoid space
weblike threads hold arachnoid mater to
pia mater, filled with CSF & largest
blood vessels that supply brain
arachnoid mater
spider mother, lies just deep to dura mater,
pia mater
gentle mother, fibrous connective tissue, richly
vascular with blood vessels
dura mater
leathery, strongest of meninges, two layered sheet
of dense fibrous connective tissue
dural sinuses
collect blood from brain, conduct it to
large internal jugular veins
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Cerebellum
controls smooth, coordinated body
movements as well as balance, posture
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Cerebrum
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parietal lobe
processes sensory stimuli, awareness of
general somatic sensation
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frontal lobe
contains areas that think, plan, make decisions,
initiating voluntary movement, memory
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Wernicke area
enables us to understand speech, name objects, read words
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projection tract
joins cerebrum to brain stem, ascending & descending signals
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Brain Stem
pons
links medulla oblongata & midbrain, relays info
from cerebrum to cerebellum
medulla oblongata
lowest part of brain stem, control centers for heart & lungs
midbrain
top of brain stem, links to thalamus, contains visual
& auditory reflex centers