Spinal Pathways Flashcards
What information is carried by the lateral spinothalamic tract?
Pain and temp
What information is carried by the ant spinothalamic tract?
Crude touch and pressure
What information is carried by the dorsal columns?
Fine touch
Proprioception
Vibration
What are the two tracts within the dorsal columns?
Fasiculus gracilis- Lower limb and medial
Fasiculus cuneatus- Upper limb and lateral
What is the spinoreticular tract for?
Acending
Quick pain responses
Has 4 neuron levels not 3
What is the spinoparabrachial tract for?
Acending
Pain
What is the spinocerebellar tract for?
Acending
Proprioception
What does your medial leminiscus carry?
What is it linked to?
Fine touch
Proprioception
Vibration
Linked to dorsal columns
What is the order of neurons in the spinothalamic tract?
1ON: Skin to dorsal horn (Body in DRG)
2ON: DH to thalamus (Decussates)
3ON: Thalamus to cortex (post central gyrus)
What is the order of neurons in the dorsal columns?
1ON: Skin to medulla
2ON: Medulla to thalamus (decussates)
3ON: Thalamus to cortex (post central gyrus)
What is the order of neurons in the corticospinal tract?
UMN: Cortex (precentral gyrus) to spinal cord
75% decussate in medulla, 25% at level needed
LMN: Ventral horn of spinal cord to muscle
What are the two divisions of the corticospinal tract?
Vent: Axial motor
Lateral: Limb motor
What information is carried by the ruberospinal tract?
Mainly flexion in the upper limb
Red nucleus in the midbrain
What information is carried by the corticobulbar tract?
All the UMN for the cranial nerves
(Cortex to brainstem nuclei with motor components)
Travels via corona radiata and genu internal capsule
Name the three descending pathways
Corticospinal
Corticobulbar
Ruberospinal
