Neuro: Brainstem And Cerebellum Flashcards
Which is more complex, the spinal cord or brainstem?
Brainstem
Lesion to the right cerebral peduncle in the corticospinal tract
Entire left side of body
Lesion to the right pons corticospinal tract
Weakness on entire left side of body
Lesion to the pyramid on right side of corticospinal tract
Weakness on entire left side of body
Lesion at the pyramidal decussation in the corticospinal tract
Bilateral effects/shutdowns
Lesion at C5 in corticospinal tract causes what?
Weakness in muscles controlled by C5 and down
Lesion to T6 of corticospinal tract causes what?
T6 level and down weakness
The corticospinal tract have a consistent ________position until the pyramidal decussation
Ventral
Anterolateral tract has a _________ position all the way up the spinal cord and brainstem
Lateral
What happens when there is a left side lesion in the anterolateral tract?
Pain ad temperature on the right side of the entire body is lost
In DCML pathway, where does the first order neuron synapse?
Ipsilateral medulla
In DCML pathway where does the second order neuron go/synapse?
Horizontal projection that crosses the midline and ascends the ML to synapse in the thalamus
Where does third order neuron in DCML pathway synapse?
Somatosensory cortex
What happens if there is a lesion in the DCML pathway on the right C1?
lose sensory on same side at C1 and lower
What happens is there is a lesion in the DCML pathway on the right at nucleus gracillis or nucleus cuneatus?
Level down pattern on right side of the body affecting fine touch, vibration, and proprioception
What happens if there is a lesion in the DCML pathway at the ML on the pts left?
Lose all sensation on the right side of the body
