Spinothalamic Tract

Question 1

What sensations does spinothalamic tract convey

Answer 1

Pain
Temperature
Crude touch

Question 2

Where does spinothalamic tract start (first neuron)

Answer 2

Nerve endings in the body

Question 3

What kind of cell is first neuron

Answer 3

Pseudo uni polar neurons

Question 4

Where do cell bodies of first neuron reside

Answer 4

Dorsal root ganglion

Question 5

Where in the CNS does first neuron enter and pathway of second neuron

Answer 5

Lissauer’s fasciculus and then descends or ascends one or two levels before synapsing with second neuron in the dorsal horn of the grey matter (back part of butterfly)

Then the axon of second neuron decisatetes (anterior white commissure)

Then ascends through brain stem and synapses onto the thalamus

Question 6

Location if Third neuron

Answer 6

From thallus to post central gurus (a primary sensory area)

(Same pathway as dorsal column medial limiscus because also a sensory pathway)