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22 Cards in this Set
- Front
- Back
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What is the spinal cord function?
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conveys sensory information to the brain and motor information from the brain
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The spinal cord also has limited spinal reflexes which are what?
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involuntary response to stimuli which can appear even postmortem
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The spinal cord is protected by what?
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vertebrae, spinal meninges, circulating CSF
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vertebrae are what?
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bones structured to surround the spinal cord
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spinal meninges are composed of 3 layers....name them.
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dura mater (outer layer)
arachnoid mater ( cobweb like appearance) pia mater(innermost layer) |
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what is the function of CSF?
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cushions the spinal cord and protects against jarring movements
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The structure of the spinal cord includes:
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white matter
grey matter grey commisure central canal |
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white matter is arranged how?
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tracts
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what is white matter composed of?
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myelinated axons
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what is the function of white matter?
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conveys sensory and motor information to and from the brain
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Grey matter is composed of what?
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soma cell bodies and dendrites
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How is grey matter arranged?
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'horns'
posterior, lateral, anterior |
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What is the function of grey matter?
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processes information r/t the spinal reflexes
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What is the function of the grey commisure?
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allows for crossing over of information ( decussation)
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What is the function of the central canal?
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where the CSF travels through
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The structure of spinal nerve includes what parts?
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dorsal root
ventral root ventral ramus dorsal ramus |
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How many pairs of spinal nerves are there?
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31
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Spinal nerves convey what?
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both sensory and motor information
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dorsal root
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conveys only sensory information
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ventral root
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conveys only motor information
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ventral ramus
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conveys sensory and motor information to the sides and front of the body
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dorsal ramus
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conveys sensory and motor information to the back of the body
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