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51 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Four functions of the spinal cord |
conduction reflexes integration locomotion |
CRIL |
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spinal cord goes _____ of the way down in the vertebral column |
2/3 |
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cluster of nerves going down spinal cord from L2 until end of vertebral column |
cauda equina |
horses tail |
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four regions of the spinal cord |
cervical thoracic lumbar sacral |
CTLS |
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two enlargements of the spinal cord |
cervical and lumbar |
CL |
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where nerves go out to the arms |
cervical |
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made up of thicker nerves where info is sent to the legs |
thoracic |
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three meninges in the spinal cord |
dura mater arachnoid mater pia mater |
tough mother spiderweb consistency gentle mother |
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space between bone and dura mater |
epidural space |
space used for pregnancy related injections |
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place between the arachnoid and pia mater that is filled with CSF |
subarachnoid space |
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a butterfly-shaped area made of neuron soma and dendrites |
gray matter |
dark |
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areas of myelinated axons surrounding the gray matter |
white matter |
light |
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canal inside the gray matter |
central canal |
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horns found on both sides of the gray matter |
posterior and anterior horns |
directional terms |
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three columns that separate white matter |
posterior, lateral, and anterior column |
PLA |
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two tracts in the white matter |
ascending and descending |
up and down |
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procedure used to examine CSF for bacteria |
spinal taps |
lumbar puncture |
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3 ordered neurons in ascending tract |
1st order, 2nd order, and 3rd order neuron |
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neuron that is a receptor and picks up messages |
1st order neuron |
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neuron that sorts/routes info |
2nd order neuron |
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neuron that makes sense of messages being sent to brain and interprets them |
3rd order neuron |
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messages being sent up to the brain |
ascending tracts |
higher |
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messages being sent down to the body |
descending tracts |
below |
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neurons in the brain |
upper neurons |
right side of brain to left side of body |
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neurons that are the effectors and the muscle being told what to do by the brain |
lower neuron |
only in the PNS |
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making an X with messages crossing sides to affect another muscle |
decussation |
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composed of axons from neurons bundled together by connective tissue |
nerves |
EPE |
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nerve inside CNS |
tract |
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three layers of connective tissue in a nerve |
endoneurium, perineurium, and epineurium |
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fibers that bring sensory messages into nervous system |
afferent nerve fibers |
in the guts |
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fiber that brings motor messages to muscles from nervous system |
efferent nerve fibers |
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fiber inside the body but closer to the surface |
somatic fibers |
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in the internal organs |
visceral fibers |
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nerves only found in afferent fibers |
sensory nerves |
clusters of lions |
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nerves only found in efferent fibers |
motor nerves |
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nerves that are found in both afferent and efferent fibers |
mixed nerves |
CTLSC |
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clusters of neuron cell bodies found outside the CNS |
Ganglions |
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there are ____ pairs of spinal nerves |
31 |
two roots |
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five levels of spinal nerves |
cervical, thoracic, lumbar, sacral, coccygeal |
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3 parts of the proximal part of a spinal nerve |
posterior and anterior roots, rootlets, and posterior root ganglion |
2 ramus and a branch |
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lead to the spinal cord of the spinal nerve |
posterior and anterior roots |
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attached the roots to the spinal cord |
rootlet |
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a bulge where the root goes out |
posterior root ganglion |
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2 parts of distal portion of a spinal nerve |
posterior and anterior ramus and the meningeal branch |
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a branch that goes into the back of the body and is shorter than the anterior ramus |
posterior ramus |
CBLSC |
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a branch that goes to the front of the body that is much longer than the posterior ramus |
anterior ramus |
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branch that leads to the three layers of tissue |
meningeal branch |
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virus remaining in the body after getting chickenpox |
shingles |
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5 nerve plexuses |
cervical, brachial, lumbar, sacral, and coccygeal |
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provide alternate pathways for messages to go thru and an area network where the nerves leave the spinal cord and mingle together |
plexus |
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area of skin that sends sensory info to a specific spinal nerve |
dermatome concept |
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