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Overview of the Nervous System
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30
Anatomy
Graduate
06/04/2013

Additional Anatomy Flashcards

 


 

Cards

Term
components of the CNS
Definition
brain

spinal cord

cranial nerves 1 and 2
Term
components of the PNS
Definition
cranial nerves 3-12 and their autonomic counterparts

spinal nerves and their counterparts
Term
spinal cord
Definition
receives info from skin and muscle and sends out motor commands for movement (voluntary and reflexive)
Term
brainstem
Definition
rostral extension of spinal cord which includes:
-medulle
-pons
-midbrain

receives info from muscles and skin or head and neck in turn controls these muscles
Term
cerebellum
Definition
modulates movement
Term
diencephalon
Definition
made up of thalamus, hypothalamus, subthalamus, epithalamus and neurohypophysis
Term
thalamus
Definition
relay zone for transmitting info regarding sensation and movement
Term
hypothalamus
Definition
contains control regions for autonomic (homeostatic) integration
Term
cerebral hemispheres
Definition
includes cerebral cortex, underlying white matter and basal ganglia

capped with cerebral cortex

concerned with high perceptual, cognitive and motor function

contralateral responsibility
Term
left hemisphere
Definition
cognitive component of language
Term
right hemisphere
Definition
affective component of language (musical intonation of speech, gesturing)
Term
frontal lobe
Definition
movement and planning
Term
parietal lobe
Definition
perception, somatic fuction, sensation
Term
temporal lobe
Definition
audition, memory, learning
Term
afferent
Definition
carries info toward the reference
Term
efferent
Definition
carries info away from the reference
Term
spinal nerve
Definition
combination of motor and sensory; afferent and efferent
Term
ventral root
Definition
efferents of spinal nerve- motor neurons
Term
dorsal root
Definition
afferents of spinal nerve- sensory neurons
Term
dorsal root ganglion
Definition
cell bodies of dorsal root fibers with their central and peripheral processes
Term
dermatome
Definition
sensory innervation of dorsal root as avident on the body surface
Term
segmental innervation
Definition
all spinal levels innervate a given muscle
Term
dorsal horn gray matter
Definition
contains cell bodies concerned with sensation which receive input from dorsal root fibers
Term
ventral horn gray matter
Definition
contains motor neurons that give rise to efferent fibers of ventral root to innervate muscle
Term
lateral horn
Definition
contains preganglionic neurons of SNS
Term
conus medullaris
Definition
where spinal cord extends to at L1/L2 vertebrae
Term
cauda equina
Definition
ventral and dorsal roots between conus medullaris but within vertebral canal
Term
dural sac
Definition
ends at S2 vertebrae
Term
filum terminale internum
Definition
extends from tip of conus medullaris to end of dural sac
Term
filum terminale externum
Definition
extends from tip of dural sac to coccyx
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