Spinothalamic
What is the sensory information received from this tract?
Pain, temperature, crude touch, pressure
What is the sensory information received from this tract?
vibration, position sense, kinesthesia, fine/discriminative touch
What tracts comprise the pyramidal system?
Corticospinal and corticobulbar
What column of the reticular formation is responsible for motor and tone?
medial
where is the rubrospinal tract located?
midbrain - red nucleus
Where does this tract decussate?
Immediately in the spinal cord
Where does this tract decussate?
Closed medulla
describe or draw the path of the corticospinal tract
descending axons from primary motor cortex travel through the internal capsule, then through the middle 2/3 of the cerebral peduncle, then through pontine nuclei, lateral corticospinal tract crosses at the pyramidal decussation of the closed medulla, continues to descend on contralateral side until entering spinal cord through DRG to synpase in anterior horn
What level of the brainstem does the medial reticulospinal tract originate? lateral?
medial - pons, lateral - medulla
what does the rubrospinal tract facilitate?
flexion
Which portion of the thalamus does this tract synapse in?
VPL
Which part of the thalamus does this tract synapse in?
VPL
What cranial nerve nuclei does not receive bilateral innervation from the corticobulbar tract?
facial nuclei
Which reticulospinal tract facilitates flexion?
medial reticulospinal tract
what does the lateral vestibulospinal tract facilitate?
extension
What symptoms will be seen with a lesion in the R pons?
L sided diminished crude touch, pain, pressure, temperature sensations
What symptoms would be seen with a lesion in the R pons?
L sided loss in proprioception, vibration, and discriminative touch
What symptoms are seen with a lesion in the R internal capsule?
L sided weakness
which reticulospinal tract facilitates flexion?
lateral reticulospinal tract
what type of posturing is seen with an injury above the midbrain?
decorticate
What symptoms would be seen with a lesion of the R side of the spinal cord (Brown-Sequard syndrome)?
L sided diminished crude touch, temperature, pain, and pressure sensations
What symptoms would be seen with a lesion of the R side of the spinal cord (Brown-Sequard syndrome)?
R sided loss in proprioception, vibration, and discriminative touch
What symptoms are seen with a lesion of the R lateral funiculus?
R sided weakness
How does the reticulospinal tract influence tone?
influencing gammas to set the readiness of our muscle spindle
what type of posturing is seen with an injury below the midbrain?
decerebrate