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26 Cards in this Set
- Front
- Back
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1. Where do the majority of descending corticospinal motor fibers cross and what do they become?
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a. At the medulla to become the lateral corticospinal tract (CST).
b. A small number of CST fibres do not decussate at the medulla and descend via the anterior CST before crossing at the level of the anterior white commissure. |
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2. Where do the ascending dorsal white columns cross?
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a. In the medulla, via the media lemmiscus, then go on to the thalamus.
b. These fibers carry joint position, vibration, and light touch sensation. |
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3. What did the spinothalamic tracts carry and where do they cross?
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a. Carry pain, temperature, and non-discriminative tactile discrimination
b. They crossed contralateral side shortly after entry to the cord in the ventral white commissure the spinal cord. |
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4. How do you classify spinal cord injury? part 1
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for pinprick and light touch, including rectal sensation.
1. The sensory level is the most caudal level with intact (grade 2) sensation for both pinprick and light touch 2. Rectal sensory examination includes evaluation of the rectal sensation as determined by the patient's ability to feel examiner's finger during digital rectal examination. b. Perform a supine motor examination of 10 key muscle groups and voluntary anal contraction. 1. The motor level for each side is the most caudal level with grade ≥3, where all muscles rostral to it are grade 5. |
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4. How do you classify spinal cord injury? part 2
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c. Determine the single neurologic level, which is the most caudal level at which both sensory and motor modalities are intact bilaterally, as defined earlier.
d. Classify injury as complete or incomplete. Complete injuries have no motor or sensory function, including deep anal sensation, preserved in sacral segments S4-5. e. Somatosensory evoked potentials (SSEPs) may be useful in differentiating complete vs. incomplete SCI in pts who are uncooperative or unconscious. |
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5. C2 Key sensory point?
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a. Occipital protuberance
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6. C3 Key sensory point?
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a. Supraclavicular fossa
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7. C4 Key sensory point?
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a. Top of the AC joint
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8. C5 Key sensory point?
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a. Lateral antecubital fossa
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9. C6 Key sensory point?
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a. Dorsal proximal thumb
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10. C7 Key sensory point?
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a. Dorsal proximal middle finger
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11. C8 Key sensory point?
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a. Dorsal proximal 5th finger
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12. T1 Key sensory point?
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a. Medial epicondyle elbow
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13. T2 Key sensory point?
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a. Apex of the axilla
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14. T4 Key sensory point?
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a. Medial to nipple
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15. T10 Key sensory point?
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a. Lateral to umbilicus
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16. T12 Key sensory point?
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a. Inguinal ligament
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17. L1 Key sensory point?
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a. Between T12 and L2
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18. L2 Key sensory point?
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a. Medial anterior thigh
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19. L3 Key sensory point?
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a. Medial anterior knee
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20. L4 Key sensory point?
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a. Medial malleolus
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21. L5 Key sensory point?
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a. Web space between 1st and 2nd toes
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22. S1 Key sensory point?
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a. Lateral heel
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23. S2 Key sensory point?
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a. Lateral popliteal fossa
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24. S3 Key sensory point?
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a. Ischial tuberosity
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25. S4-5 Key sensory point?
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a. Anal mucocutaneous junction.
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