L28

Question 1

what does the lateral tract generally control

Answer 1

voluntary control of legs and arms

Question 2

what does the medial tract generally control

Answer 2

postural/balance control, axial muscles

Question 3

what does the corticospinal tract carry information down the spinal cord from

Answer 3

M1
PreMC
Primary somatosensory cortex

Question 4

does more cross over to become lateral corticospinal or ventral/medial corticospinal

Answer 4

85% cross over for lateral corticospinal

Question 5

what tract corresponds with the lateral tract

Answer 5

dorsal/lateral corticospinal

Question 6

what tracts correspond to the medial tracts

Answer 6

ventro-medial (anterior) corticospinal
reticulospinal (pontine and medullary)
vestibulospinal (both)

Question 7

where does the medial vestibulospinal tract run through

Answer 7

the medial longitudinal fasiculus

Question 8

where does the medial vestibulospinal tract project onto

Answer 8

to the eyes primarily but some spinal cord
(head and neck msucles)

Question 9

what does the lateral vestibulospinal tract project onto

Answer 9

projects from the lateral vestibular nucleus to postural muscles in spinal cord

Question 10

what other tract does the lateral vestibulospinal tract work with

Answer 10

medial pontine reticulospinal tract

Question 11

where does the pontine reticulospinal tract run from

Answer 11

the pontine nuclei

Question 12

where does the lateral reticulospinal tract project from

Answer 12

medullary nuclei

Question 13

what does the pontine reticulospinal tract do

Answer 13

excitation of extensor muscles of the limbs

Question 14

what does the medullary reticulospinal tract do

Answer 14

inhibits extensor muscles of the limbs (turns on flexors)

Question 15

what are the two main ascending tracts

Answer 15

dorsal column/medial lemniscal
and
spinothalamic tract

Question 16

what type of info is the dorsal column moving

Answer 16

light touch, proprioception

Question 17

what type of info is the spinalthalamic tract moving

Answer 17

pain, pressure, crude touch

Question 18

where is the dorsal columns end goal

Answer 18

primary somatosensory cortex

Question 19

explain the order of the synapses for the dorsal column system

Answer 19

starts at the spinal cord and crosses over at the medulla and, via the thalamus then projects on to the somatic sensory cortex

Question 20

where is the spinothalamic system going to

Answer 20

somatosensory cortex and other areas

Question 21

what are the three synapses or the path the spinothalamic system travels

Answer 21

crosses over in spinal cord then travels to the thalamus and from the thalamus to the primary somatosensory cortex