USA Neuroscience EXAM 2 ACTUAL
QUESTIONS AND CORRECT ANSWERS
Where does sensory information come into the CNS? - CORRECT ANSWER Spinal
Cord
What are the 4 ascending tracts? - CORRECT ANSWER 1. DCML - Posterior Column
Medial Lemniscal(f.gracilis, F. cuneatus)
2. ALS - Anterolateral System (spinothalamic*, spinoreticular, spinomesencephalic)
3. Ventral and Rostral Spinocerebellar 4. Dorsal Spinocerebellar and Cuneocerebellar
What makes up the posterior column medial lemniscal? - CORRECT ANSWER 1)
Fasciculus cuneatus
2) Fasciculus gracilis
What carries lower extremity information of sensory info from the periphery to the brain? -
CORRECT ANSWER Fasciculus Gracilis
What carries upper extremity information of sensory info from the periphery to the brain? -
CORRECT ANSWER Fasciculus Cuneatus
Anterior Lateral System (ALS) 3 parts? - CORRECT ANSWER 1) Spinothalamic*
(Focus)- location & intensity of stimulus
2) Spinoreticular- emotion/arousal (pons/medulla)
3) Sinomesencephalic- modulation of pain (midbrain)
, What are Long Tracts? - CORRECT ANSWER Pathways that travel the full length of
the spinal cord. Coming from the periphery to the brain
Anteriolateral Pathways function? - CORRECT ANSWER Sensory
(Pain, temperature, crude touch)
* LONG TRACT
Posterior Column-Medial Lemniscal pathways function? - CORRECT
ANSWER Sensory
(Vibration, Jt position/proprioception, fine touch)
*LONG TRACT
Anterolateral pathways name (and level) of decussation? (crossing over occurs) - CORRECT
ANSWER anterior commissure (spinal cord)
Posterior column- medial lemniscal pathway name (and level) of decussation? (crossing over
occurs) - CORRECT ANSWER internal arcuate fibers (lower medulla)
Spinothalamic tract sensation? - CORRECT ANSWER "OH, i'm stepping on
something sharp"
(location)
Spinoreticular tract sensation? - CORRECT ANSWER "Ouch that hurts!"
(emotional component)
Spinomesenchephalic tract sensation? - CORRECT ANSWER "Ahhh, feels better"
(pain modulation)
QUESTIONS AND CORRECT ANSWERS
Where does sensory information come into the CNS? - CORRECT ANSWER Spinal
Cord
What are the 4 ascending tracts? - CORRECT ANSWER 1. DCML - Posterior Column
Medial Lemniscal(f.gracilis, F. cuneatus)
2. ALS - Anterolateral System (spinothalamic*, spinoreticular, spinomesencephalic)
3. Ventral and Rostral Spinocerebellar 4. Dorsal Spinocerebellar and Cuneocerebellar
What makes up the posterior column medial lemniscal? - CORRECT ANSWER 1)
Fasciculus cuneatus
2) Fasciculus gracilis
What carries lower extremity information of sensory info from the periphery to the brain? -
CORRECT ANSWER Fasciculus Gracilis
What carries upper extremity information of sensory info from the periphery to the brain? -
CORRECT ANSWER Fasciculus Cuneatus
Anterior Lateral System (ALS) 3 parts? - CORRECT ANSWER 1) Spinothalamic*
(Focus)- location & intensity of stimulus
2) Spinoreticular- emotion/arousal (pons/medulla)
3) Sinomesencephalic- modulation of pain (midbrain)
, What are Long Tracts? - CORRECT ANSWER Pathways that travel the full length of
the spinal cord. Coming from the periphery to the brain
Anteriolateral Pathways function? - CORRECT ANSWER Sensory
(Pain, temperature, crude touch)
* LONG TRACT
Posterior Column-Medial Lemniscal pathways function? - CORRECT
ANSWER Sensory
(Vibration, Jt position/proprioception, fine touch)
*LONG TRACT
Anterolateral pathways name (and level) of decussation? (crossing over occurs) - CORRECT
ANSWER anterior commissure (spinal cord)
Posterior column- medial lemniscal pathway name (and level) of decussation? (crossing over
occurs) - CORRECT ANSWER internal arcuate fibers (lower medulla)
Spinothalamic tract sensation? - CORRECT ANSWER "OH, i'm stepping on
something sharp"
(location)
Spinoreticular tract sensation? - CORRECT ANSWER "Ouch that hurts!"
(emotional component)
Spinomesenchephalic tract sensation? - CORRECT ANSWER "Ahhh, feels better"
(pain modulation)
