Neuro spinal tracts

Question 1

At what level does the spinal cord end?

Answer 1

L1/L2

Question 2

What are the major sensory spinal tracts? (2)

Answer 2

DCML

Spinothalamic

Question 3

What does DCML sense? (3)

Answer 3

Fine touch
Vibration
Proprioception

Question 4

What is the big spinal tract at the posterior of the spinal cord?

Answer 4

DCML

Question 5

What are the two parts of the Spinothalamic tract? (2)

Answer 5

Anterior (Crude touch)

Lateral (Pain& temperature)

Question 6

Where does the DCML decussate?

Answer 6

Brainstem

Question 7

Where does the Spinothalamic tract decussate?

Answer 7

Immediately on entering spinal cord

Question 8

What is the difference in decussation between the DCML and Spinothalamic tract?

Answer 8

Spinothalamic tract decussates immediately on entering spinal cord

DMCL decussates in brainstem

Question 9

What does the Anterior Spinothalamic tract sense?

Answer 9

Crude touch

Question 10

What does the Lateral Spinothalamic tract sense? (2)

Answer 10

Pain

Temperature

Question 11

What are the main motor tracts? (2)

Answer 11

Corticospinal (spine > body > muscles)

Corticobulbar (bulb > head > cranial nerves)

Question 12

Where does the Corticobulbar Tract end?

Answer 12

Brainstem

Question 13

What does the Corticobulbar Tract innervate?

Answer 13

Motor function of cranial nerve muscles

Question 14

What are the two parts of the Corticospinal Tract? (2)

Answer 14

Anterior (axial muscles)

Lateral (Limb muscles)

Question 15

What is innervated by the Anterior Corticospinal Tract?

Answer 15

Axial muscles

Question 16

What is innervated by the Lateral Corticospinal Tract?

Answer 16

Limb muscles

Question 17

Babinski positive suggests a problem with which tract?

Answer 17

Corticospinal tract

Question 18

Describe Decorticate posturing (2)

Answer 18

Person stiff with flexed arms and wrists
Feet turned in

DeCORticate into their CORE

Question 19

Describe Decerebrate posturing

Answer 19

Person stiff with arms extended by their sides
Feet pointed down

Loads of E’s- Extended arms

Question 20

A lesion where causes Decerebrate posturing?

Answer 20

At or below Red nucleus

Question 21

A lesion where causes Decorticate posturing?

Answer 21

Above Red nucleus

Question 22

Is hyperreflexia an UMN or LMN sign?

Answer 22

UMN

Question 23

Is hyporeflexia an UMN or LMN sign?

Answer 23

LMN

Question 24

Why does Cauda Equina Syndrome always present with hyporeflexia?

Answer 24

Because it is due to LMN pathology

the Cauda Equina is all LMNs, it’s not part of the actual cord

Question 25

Which tract does patterns of movements?

Answer 25

Reticulospinal tract

Question 26

What is Syringomyelia?

Answer 26

Cyst growing in central canal of spinal cord Blocks spinothalamic decussation at that level, therefore bilateral touch/pain/temperature sensory loss

Question 27

What pattern of sensory loss is seen in Syringomyelia?

Answer 27

Cape-like pattern | Loss of touch, pain & temperature sensation

Question 28

Cape-like pattern of sensory loss suggests what?

Answer 28

Syringomyelia

Question 29

Syringomyelia involves sensory loss. What sensation is spared?

Answer 29

Fine touch Vibration Proprioception (DCML is spared)

Question 30

Syringomyelia involves sensory loss. What sensation is lost?

Answer 30

Crude touch Pain Temperature (bilaterally, due to interruption of spinothalamic tract decussation)

Question 31

What spinal cord tract moves the head in response to auditory and visual stimuli?

Answer 31

Tectospinal tract

Question 32

Are Myelinated nerves found in grey or white matter?

Answer 32

White

Question 33

Which fasciculus of the DCML carries sensory information from the upper limb?

Answer 33

Cunate C top Gracile bottom

Question 34

Which fasciculus of the DCML carries sensory information from the lower limb?

Answer 34

Gracile C top Gracile bottom

Question 35

Another name for the Primary Motor Cortex?

Answer 35

Precentral Gyrus | Act first Feel after not Postcentral because Postcentral- more Posterior

Question 36

Another name for the Primary Sensory Cortex?

Answer 36

Postcentral Gyrus | Act first Feel after Postcentral- more Posterior

Question 37

Where is the Red Nucleus?

Answer 37

Midbrain (at same level as the temporal lobe wings)