Workshop 2 Spinal Cord and Pain Pathways

Question 1

Meaning of Tract:

Answer 1

bundle of axons that follow the same course and the carry the same type of information

Question 2

Fasciculus=

Answer 2

Tract

Question 3

Meaning of Pathway:

Answer 3

route taken by tracts as they transmit information from one region of the NS to another

Question 4

Funiculus meaning

Answer 4

bundle of the nerve fibres

Question 5

Meaning of Soma topically:

Answer 5

neurons enter the spinal cord at a lower level are positioned more medially within the spinal cord.
Neurons that are higher level of the spinal cord are positioned more laterally within the spinal cord.
Flexors=dorsal
Extensors=ventral

Question 6

Define Dorsal Column

Answer 6

Gracile/Cuneate Fasciculi

Question 7

Dorsal Column do fibres from the upper limbs travel?

Answer 7

Cuneate Fasciculus: Conscious proprioception, fine touch and vibration

Question 8

Dorsal Column do fibres from the lower limb travel?

Answer 8

Gracile Fasciculus: Conscious Proioception, fine touch and pressure and vibration

Question 9

DCML what way?

Answer 9

ascending

Question 10

DCML is is sensory or motor

Answer 10

sensory

Question 11

what info does the DCML carry?

Answer 11

fine touch and conscious proprioception sensation

Question 12

Meissner’s Corpuscles:

Answer 12

sensitive to fine touch

Question 13

Pacinian Corpuscles:

Answer 13

sensitive to deep pressure

Question 14

Ruffini:

Answer 14

sensitive to skin stretch

Question 15

Merkel:

Answer 15

sensitive light touch

Question 16

Difference b/w Nucleus/Ganglion

Answer 16

Nucleus CNS, ganglion in the PNS

Question 17

Spinothalamic Tract what kind of pathway?

Answer 17

Sensory, Ascending

Question 18

Type of Information is carried Spinothalamic tract?

Answer 18

pain, temperature and crude touch sustained pressure

Question 19

Define Anterolateral and Ventrolateral System

Answer 19

Spinothalamic tract-anterolateral-ventrolateral system. Anterolateral system is the pathway via which pain signals are carried to the sensory cortex

Question 20

Type of info Lateral Spinothalamic

Answer 20

pain/temp

Question 21

Type of info Anterior Spinothalamic

Answer 21

Crude touch pressure

Question 22

Lissauer’s tract

Answer 22

Crude touch and pressure-related axons ascend or descend 1-2 spinal levels
Spinothalamic tract neurons enter the spinal cords via Lissaeur’s fasciculus and ascending descending 1-2 spinal levels before synapsing with a neuro in the dorsal horn of the grey matter.

2nd Neuron the decussates and ascends via the spinothalamic fasciculus.

Question 23

What is the Substania Gelatinosa and Nucleus proprius?

Answer 23

1st Synapse in the spinothalamic tract

Question 24

Anterior White Commisure?

Answer 24

Site of decussation of the 2nd order neurons in the spinothalamic tract

Question 25

SpinoCerebellar Pathway what type?

Answer 25

Sensory, Ipsilateral ascending

Question 26

Role of the Spinocerebellar?

Answer 26

carries unconscious propioceptive sensations from the body, through the spinal card to the cerebellum

Question 27

Clarke's nucleus and what levels does it only exist in and number Laminae?

Answer 27

beginning of the spinocerebellar pathway C8-L2 Laminae 7

Question 28

Ventral SpinoCerebellar

Answer 28

relays proprioceptive and ex

Question 29

Ventral SpinoCerebellar

Answer 29

Relays Proprioceptive and Exteroceptive from the ipsilateral limb and lower limb assistnace in coordination of movements of lower limb and mm

Question 30

Anterior Spinocerebellar

Answer 30

Proprioception from the ipsilateral skeletal mm, joints tendons in ipsilateral torso and lower limb

Question 31

Rostral SpinoCerebellar

Answer 31

Propioceptive input from ipsilateral head and upper limb. assists in movement of head and upper limb

Question 32

Cuneocerebellar

Answer 32

propioceptive information from ipsilaterla neck and upper limb.

Question 33

Lateral Corticospinal tract

Answer 33

conveys commands for fine movement of ipsilateral limbs

Question 34

Anterior Corticospinal Tract

Answer 34

Conveys commands for movements of the contra-lateral axial mm

Question 35

Anterior White Commissure

Answer 35

bundle of nerve fibres which cross the midline of the spinal cord. Deccuastion