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24 Cards in this Set
- Front
- Back
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Dorsal |
Sensory, info traveling to the spinal cord |
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Ventral |
Motor, infor traveling away from spinal cord |
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White matter |
Dorsal funiculus Lateral funiculus Ventral funiculus |
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Lateral funiculus |
Spinothalamic tract - ascending sensory Corticospinal tract - descending motor |
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Ventral funiculus |
Spinothalamic tract - ascending sensory Corticospinal tract - descending motor |
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Decussation |
Crossing of neurons from one side of body to other side |
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Cortalateral |
Opposite side |
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Ipsilateral |
Same side |
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Ascending - 1st order neurons |
Contralateral Sensory From outside of body to spinal cord |
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Ascending - 2nd order neuron |
Decussation Travel to a higher level of CNS |
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Ascending - 3rd order neuron |
Ipsilateral From thalamus to cortex |
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What is the name of the spinal tract that carries light touch and pressure in the ventral faniculus? |
Ventral spinothalamic tract |
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What is the name of the spinal tract that carries pain and temp in the lateral faniculus? |
Lateral spinothalamic tract |
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Which spinal tract decussates within one spinal segment? |
Lateral spinothalamic with pain & temp |
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What spinal tract takes several spinal segments to decussate? |
Ventral spinothalamic with light tough & pressure |
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What spinal tract carries conscious muscles & joint sense information? |
Dorsal column pathway |
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What spinal tract decussates in the medulla oblongata? |
Dorsal column pathway |
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Takes motor information from the brain to out in the body |
Descending spinal tract |
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Motor neurons found from the spinal tract all the way to the brain |
Upper motor neuron |
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Motor neurons found throughout the body expect in the CNS |
Lower motor neuron |
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What spinal tract does 80% of decussation happen in the medulla oblongata? |
Lateral corticospinal tract |
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What spinal tract decussates in the same level of spinal segment? (20%) |
Ventral corticospinal tract |
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Are relfelxes ipsilateral or contralateral? |
Ipsilateral |
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Describe the reflex arc. |
Begins with the receptor at the pain site then to the sensory neuron through the integration center then motor neurons fire the muscles to initiate the effector muscles or glands |
