Nervous [Sensory Systems]

Question 1

Which structure does info from lower limbs travel through?

Answer 1

Gracile fasciculus

Question 2

What structure does info from upper limbs travel through?

Answer 2

Cuneate fasciculus

Question 3

What section(s) of the sensory area does the touch/pressure neuron travel into?

Answer 3

Into second bit of sensory area then also into the right middle column

Question 4

What section(s) of the sensory area does the pain/temp neuron travel into?

Answer 4

First section of sensory area then through to the other side into the anterolateral system (spinothalamic)

Question 5

Dissociative loss on right (location and effect?)

Answer 5

Spinal cord
Touch/pressure right
Pain/temp left

Question 6

Conduction speed for both pathways

Answer 6

Dis: 50m/s
Non: 1m/s

Question 7

1st neuron terminates where for both pathways?

Answer 7

Dis: medulla, nucleus
Non: dorsal grey matter

Question 8

Decussates where for both pathways?

Answer 8

Dis: internal arcuate Fibres
Non: spinal segmental level (anterior white matter)