sensory pathways 1

Question 1

Where are the cell bodies of primary neurons located?

Answer 1

in dorsal root ganglions

Question 2

Where are the secondary cell bodies of spinothalamic pathway neurons located?

Answer 2

ipsilateral gray matter in dorsal grey horn,

Question 3

where are the tertiary cell bodies of spinothalamic pathway neurons located?

Answer 3

posterior ventral nucleus of thalamus

Question 4

describe the path of a secondary spinothalamic pathway neuron?

Answer 4

neuron crosses in ventral white commisure and ascends in contralateral spinothalamic tract

Question 5

Where are the cell bodies of secondary dorsal column pathway neurons located?

Answer 5

gracile/ cuneate nuclei

Question 6

Where do primary dorsal column pathway neurons ascend?

Answer 6

ipsilateral gracile/ cuneate (above T6) fasicle

Question 7

Where do secondary dorsal column pathway neurons ascend?

Answer 7

cross midline in internal arcuate fibres, ascend in contralateral medial lemniscus