spinal nerves
Backbone's branching wires
Spinal nerves are the pairs of nerves that branch off from the spinal cord and exit through openings between vertebrae.
Humans have thirty-one pairs, each carrying motor and sensory signals between the spinal cord and specific regions of the body.
The doctor tested whether the spinal nerves in my lower back were compressed.
Interlocking bones of spine
ganglion · lumbar · cervical · thoracic · sacral · coccygeal · plexus · foramen
Compressed spinal nerve condition
- myelopathySpinal cord pathology
- neuropathyDamage to peripheral nerves
- herniationOrgan protruding abnormally
- compressionForcing into smaller space
stenosis · sciatica · pinched · impingement · inflammation · degeneration · injury · lesion
Slight stinging sensation
- numbnessLoss of sensation
- painBodily or emotional distress
- burningCombustion in progress
- pricklingSharp tingling sensation
temperature · pressure · touch · vibration · paresthesia · radiating pain · sensitivity · referred pain
Sending of information
- impulseSudden urge to act
- axonNeuron's signal-sending projection
- dendriteNeuron's input branch
- myelinNerve fiber insulation
neuron · synapse · conduction · afferent · efferent · action potential · motor neuron · signal
Energy-to-motion converter
- reflexInvoluntary stimulus response
- contractionReduction in size
- voluntaryDone by choice
- involuntaryNot under conscious control
coordination · muscle weakness · paralysis · spasticity · flaccidity · atrophy · innervation · neuromuscular
vertebrae
Interlocking bones of spine
root · ganglion · lumbar · cervical · thoracic · sacral · coccygeal · plexus · foramen · meninges
radiculopathy
Compressed spinal nerve condition
- myelopathySpinal cord pathology
- neuropathyDamage to peripheral nerves
- herniationOrgan protruding abnormally
compression · stenosis · sciatica · pinched · impingement · inflammation · degeneration · injury · lesion · trauma
tingling
Slight stinging sensation
prickling · temperature · pressure · touch · vibration · paresthesia · radiating pain · sensitivity · referred pain · sharp
transmission
Sending of information
myelin · neuron · synapse · conduction · afferent · efferent · action potential · motor neuron · signal · electrical
motor
Energy-to-motion converter
- reflexInvoluntary stimulus response
- contractionReduction in size
- voluntaryDone by choice
involuntary · coordination · muscle weakness · paralysis · spasticity · flaccidity · atrophy · innervation · neuromuscular · motor neuron
- nervous systembrain, neurons, nerves, axon, dendrite
- back anatomybackbone, back, vertebral column, upper back, vertebrae
- nervesperipheral nerves, cranial nerves, sensory nerves, motor nerves
- spinevertebra, backbone, vertebral body, cervical vertebrae, thoracic vertebrae
- spinal cordgray matter, white matter, grey matter, spinothalamic tract, motor neurons
- motor systemmotor cortex, motor neurons, motor control, voluntary movement, upper motor neuron
spinal nervescranial nerves
Twelve brainstem-emerging neural pairs
vagus nerve · facial nerve · optic nerve · olfactory nerve · hypoglossal nerve
spinal nervesspinal cord
Brain's extension through vertebrae
central nervous system · brain · brainstem · white matter · cerebrum
nerve, nervous, spine, spindle, spindly, spinal, spinal cord, nervous system