Spinal Pathways- Posterior Column Medial Lemniscus Flashcards
1
Q
What does the PCML pathway deal with?
A
Fine touch
Pressure
Vibration
Proprioception
2
Q
What is the PCML named for?
A
Where it travels (posterior column) and where it decussates (medial lemniscus)
3
Q
Where is the first synapse in the PCML?
A
Brainstem
4
Q
Where does the first synapse decussate (cross over)?
A
Medulla oblongata
5
Q
What is the medial lemniscus?
A
A tract of fibers in the white matter of the medulla oblongata
6
Q
Where is the second order neuron in the PCML?
A
Between the medulla oblongata and the thalamus
7
Q
Where in the third order neuron in the PCML?
A
Between the thalamus and the cerebral cortex
8
Q
Where does the third order neuron in the PCML end?
A
In the primary somatosensory cortex of the parietal lobe
