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54 Cards in this Set
- Front
- Back
Forward slippage of the L5 vertebrae. Damages PNS only, not CNS (because spinal cord ends at L1, and cauda equina is all PNS)
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Spondolisthesis
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Damage to cauda equina, as in spondolishtesis, affects ____ only, not CNS.
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PNS
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The dural sac ends at vertebral level ___
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S2
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The continuation of the meningeal layer of cranial dura on the spinal cord is called ___
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spinal dura
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The continuation of the periosteal layer of cranial dura is ___ in the spinae.
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periosteum of the vertebrae
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There are __ pairs of spinal nerves exiting the vertebral column.
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31
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There are __ cervical spinal nerves.
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8
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Cervical spinal roots exit ___ the like-named vertebrae.
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Above
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Thoracic and Lumbar ventral roots exit ____ the vertebrae of the same level.
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below
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The presence of a ____ indicates that the peripheral sensory and motor components of a particular cord level are intact.
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normal tendon reflex
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The shoulder and lateral arm belongs to the ___ dermatome.
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C5.
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The ___ myotome abducts the shoulder. Test with the biceps brachii reflex.
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C5
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The __ dermatome is the lateral forearm.
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C6
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The ___ myotome control elbow FLEXION and wrist EXTENSION
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C6
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The C7 dermatome is the ___
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middle finger
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Test C6 tendon reflex at ___
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brachioradialis
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Test C7 tendon reflex at ___
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triceps brachii
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The __ myotome controls elbow extension and wrist flexion.
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C7
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The __ dermatome is medial knee and leg.
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L4
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The myotome for __ does knee extension.
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L4
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L4 tendon reflex is tested on the ___
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patellar tendon
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The __ dermatome is the lateral foot.
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S1
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The S1 myotome controls ___
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ankle plantar flexion
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The tendon reflex to test S1 is at the __
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Achilles tendon
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The front of the spinal cord has anterior median fissure, the posterior side has the posterior median ___
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sulcus
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The only "fissure" on the spinal cord is the anterior median fissure, the rest of the grooves are ___
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sulci
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The posterior intermediate sulcus is present at vertebral levels ___
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above T7
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The medial motor group in the ventral horn innervates ___ and is present throughout the cord.
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axial muscles
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The lateral motor group of the ventral horn innervates ___ is only present in C5-T1 and L2-S3.
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limb muscles
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The ___ motor group of the ventral horn is only present where you have brachial and lumbar plexus.
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lateral motor group
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Motor neurons for extensor muscles lie more ___ in the cell column than flexors.
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ventral
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Motor neurons for flexors lie ___ to those for extensors.
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posterior
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The more proximal the muscle group, the more ___ the neuron bodies that innervate it are within the cord.
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medial
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The nuclear columns of the posterior column includes:
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posteromarginal nucleus, substantia gelatinosa, nucleus proprius
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The posterior cell column (posteromarginal, substantia gelatinosa, nucleus proprius) extends in what parts of the spinal cord?
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Entire length
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Nucleus dorsalis/Clarke's nucleus, is present in spinal cord levels ___
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C8-L2
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Clarke's nucleus part of the ___ pathway.
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spinocerebellar pathway
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Clarke's nucleus receives afferents from ___
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muscle and tendon sensory receptors (muscle spindles, etc)
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Nucleus proprius functions in ___
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proprioception
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Substantia gelatinosa functions in ___
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pain and temprature
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The white matter between the anterior lateral sulcus and posterior lateral sulcus in the spinal cord
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Lateral funiculus
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The white matter between the posterior median and posterior lateral sulci.
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Posterior funiculus. Bilaterally is dorsal columns.
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funiculus =
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white matter of spinal cord
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Tract carrying sensory info from the lower half of the body
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fasiculus gracilis
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Tract carrying info from the upper half of the body
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fasiculus cuneatus (note, you don't see cuneatus til above T7, so it makes sense that its the one with upper half of body sensory)
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The PSNS nuclei in the lateral gray columns is in levels __
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S2-S4
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The Rubrospinal tract is a ____ tract.
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Descending motor tract
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In the spinothalamic tracts, neck to toe info is arranged ____ to ___
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medial to lateral
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In the dorsal columns, sensory info for neck to toe is arranged __ to ___
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lateral to medial
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In the lateral corticospinal tract, motor info for neck to toe is arranged __ to __.
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medial to lateral.
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The commissure at the base of the anterior median fissure in the spinal cord.
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Ventral white commissure
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The white matter tract that contains fibers from cells in the dorsal root ganglia that ascend or descend a bit before entering posterior horn.
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Lissauer's Tract/ Dorsolateral fasiculus
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Lissauer's tract contains fibers from the __
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dorsal root ganglion
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__ surround the gray matter and connect different levels of the spinal cord for integration.
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Intersegmental fibers.
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