Spinal Cord tracts

Question 1

Tract that connects the spinal cord to the thalamus

Answer 1

spinothalamic tract

Question 2

Tract that connects the spinal cord to the cerebellum

Answer 2

Dorsal spinocerebellar tract

Question 3

Which tracts connects the cerebral cortex(brainstem) to the spinal cord

Answer 3

Lateral Corticospinal tract

Question 4

The Dorsal Column carries the following sensory modalities

Answer 4

vibration, conscious proprioception (being aware of your body position) fine touch

Question 5

Graphestesia

Answer 5

compiling touch information and translating that into numerical or word structure

Question 6

stereognosia

Answer 6

ex. reaching into a bag and being able to know what you are grabbing (differentiation)

Question 7

the first order neuron for all ascending systems is always the

Answer 7

dorsal root ganglian

Question 8

dorsal column: information coming in from cervical and upper thoracic levels of the body will travel in to this tract (C2-T6)

Answer 8

Fasciculus cuneatus

Question 9

dorsal column: information coming in from the lower thoracic, lumbar and sacral regions travel through this tract (T7-S5)

Answer 9

Fasciculus gracilis

Question 10

Dorsal column: the first order neuron ascends to the medulla where it synapses on which second order neuron

Answer 10

nucleus cuneatus or nucleus gracilis

Question 11

Dorsal column: the second axon crosses the midline, ascends to the thalamus and synapses on

Answer 11

a third order neuron that ascends to the cerebral Cortex

Question 12

the nucleus cuneatus and the nucleus gracilis are (blank) to the side the information came in

Answer 12

ipsilateral (same side)

Question 13

Dorsal Column: the thalamus and primary sensory cortex are (BLANK) to where the information came in

Answer 13

contralateral (opposite side)

Question 14

the spinothalamic tract carries which sensory modality

Answer 14

laterally: pain and temperature
anteriorly: crude touch (touch but no fine detail)

Question 15

position of first order neuron in the spinothalamic tract

Answer 15

Dorsal root ganglion

Question 16

what is the pathway of the spinothalamic tract

Answer 16

the first order neurons in the DRG synapse on 2nd order neurons in the dorsal horn (substantial gelatinosa/ nucleus proprius) these axons cross the contralateral side then ascend in the spinothalamic tract then synapse on a third order neuron in the the thalamus and ascend to the cerebral cortex

Question 17

this pathway carries information from sensory receptors in the skeletal muscle (muscle spindles and Golgi tendon organs)

Answer 17

dorsal spinocerebellar tract

Question 18

this pathways supplies cerebellum with information about muscle- unconscious proprioception

Answer 18

dorsal spinocerebellar tract

Question 19

what is the pathway of the dorsal spincerebellar tract

Answer 19

the first order neurons are in the dorsal root ganglion. they synapse on second order neurons in the dorsal horn (specifically Clarke’s column) and the second axon ascends in the DSCT and terminates in the ipsilateral cerebellum

Question 20

difference between the DSCT vs the dorsal column and spinothalamic tract

Answer 20

no third order neuron and doesn’t go to the cerebral Cortex

Question 21

Which tract controls voluntary movement

Answer 21

Lateral corticospinal tract

Question 22

fibers of the LCST tract originate in the?

Answer 22

pre-central gyrus of the frontal lobe

Question 23

movement of different regions is controlled by particular regions of the

Answer 23

cerebral cortex

Question 24

body parts that require fine motor skills have

Answer 24

larger parts of the cerebral cortex dedicated to them

Question 25

what is the pathway of the lateral corticospinal tract

Answer 25

starting up in the brain within the precentral gyrus the neuron is going to send its axon down through all the levels of the brain and brainstem, it will cross to the opposite side before ultimately diving in to the ventral horn of the gray matter where it will stimulate the somatomotor neuron to head out into the periphery and cause contraction of the muscle

Question 26

The LCST begins with what type of neuron

Answer 26

upper motor neuron

Question 27

The upper motor neuron synapses on a (blank) in the ventral horn of the spinal cord

Answer 27

Lower motor neuron

Question 28

what goes out of the ventral root and stimulates skeletal muscle contraction within the LCST

Answer 28

lower motor neuron