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NBS REVIEW > Spinal Anatomy Tracts (CNS) > Flashcards

Spinal Anatomy Tracts (CNS) Flashcards

0
Q

Motor fibers are what type of fibers

A

Efferent

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1
Q

Sensory comes from what type of fibers

A

Afferent

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2
Q

The corticospinal tract (pyramidal) (lateral and Anterior) functions to do what

A

Precise and skilled voluntary movement

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3
Q

What is the origin and destination of the corticospinal tracts

A

Primary and Secondary motor cortex, parietal lobe

Internuncial neurons or alpha motor neurons

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4
Q

How far does the 1) Lateral corticospinal and 2) Anterior corticospinal tract go down the cord

A

1) Length of the cord

2) Stops mid-thoracic

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5
Q

the reticulospinal (pontine and medullary) functions to do what

A

Inhibit or facilitate voluntary movement

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6
Q

what is the origin and destination of the Reticulospinal tract

A

Reticular formation

Alpha and Gamma Motor Neurons

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7
Q

Where does the Renticulospinal tract decussate

A

at various locations

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8
Q

what is the function of the tectospinal tract

A

reflex postural movement to visual stimuli

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9
Q

what is the origin and destination of the tectospinal tract

A

Superior colliculus (midbrain)

Alpha and gamma motor neuron

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10
Q

The Rubrospinal tract functions to do what

A

Facilitates flexors and inhibits extensors

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11
Q

what is the origin and destination of the the Rubrospinal tract

A

Red nucleus (midbrain)

Alpha and Gamma motor neurons

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12
Q

the vestibulospinal tract tract functions as what

A

Facilitates extensors and inhibits flexors

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13
Q

what is the origin and destination of the vestibulospinal tract

A

Lateral vestibular nucleus

Alpha and Gamma motor neurons

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14
Q

the vestibulospinal tract receives information from where

A

Inner ear (via vestibular nerve) and cerebellar information

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15
Q

The Corticospinal, Reticulospinal, tectospinal, rubrospinal and vestibulospinal tracts are what type of tracts

A

Descending (Motor) tracts

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16
Q

The Lateral and Anterior Spinothalamic, Dorsal columns (Fasciculus cuneatus and Fasciculus gracilis), Posterior and Anterior spinocerebellar, spinotectal and spinoreticular are all examples of what kind of tracts

A

Ascending (sensory) tracts

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17
Q

What is the function of the Lat. Spinothalamic thract

A

Pain and temperature

18
Q

what is the Pathway of the Lateral spinothalamic tract

A

First posterior root gangion
Second Substantia Gelatinosa
Third Posterior lateral nucleus of the thalamus

19
Q

the Posterior lateral nucleus of the thalamus relays info where

A

PostCentral gyrus

20
Q

what is a fluid filled cyst that leads to cape-like (bilateral) los of pain and temperature

A

Syringomyelia

21
Q

What is the function of the Anterior Spinothalamic tract

A

“Protopathic” is defensive to pain, temperature

Crude light touch

22
Q

what is the pathway of the Anterior spinothalamic tract

A

1- Posterior root ganglion
2- Substantia Gelatinosa
3- Posterior lateral nucleus of the thalamus going to the Postcentral gyrus

23
Q

Tactile sensation is found in what Tract

A

Anterior spinothalamic

24
Q

what are the two tracts of the dorsal column

A

Fasciculus Cuneatus and Fasciculus Gracilis

25
Q

What is the function of the posterior columns

A

Discriminative touch (2point), Vibration and conscious proprioception

26
Q

what is the pathway of the dorsal columns

A

1- posterior root ganglion
2- Nuclei gracilis/cuneatus
3- posterior lateral nucleus of thalamus to the Postcentral gyrus

27
Q

Cuneatus is above what spinal level

A

T6

28
Q

Gracilis is below what spinal level

A

T6

29
Q

what are some diseases that affect the dorsal columns

A 
Diabetes mellitus
Posteriolateral sclerosis (PLS)
tabes dorsales (syphilis)
30
Q

Posterior spinocerebellar tract function as what

A

Unconscious proproception

31
Q

what is the pathway of the Posterior spinocerebellar tract

A

1- posterior root ganglion

2- Nucleus dorsalis (clark’s column) ascend through inferior cerebellar peduncle to cerebellum

32
Q

The Posterior Spinothalamic tract travels through what

A

PI-Posterior inferior peduncle

33
Q

the Anterior Spinothalamic tract function with what

A

unconscious proprioception

34
Q

what is the pathway of the anterior spinothalamic tract

A

1- Posterior rood ganglion
2- Nucleus dorsalis (clark’s Column) cross segmentally and ascend through superior cerebellar peduncles to the cerebellum

35
Q

which peduncle does the anterior spinocerebellar tract pass through

A

AS- Anterior Superior peduncle

36
Q

the spinotectal tract functions with what

A

Spino visual reflexes

37
Q

What is the pathway of the Spinotectal tract

A

1- Posterior rood ganglion

2- crosses segmentally and ascend to superior colliculus (Midbrain)

38
Q

Spinotectal tract causes what to move with reflexes

A

movements of eyes and head toward stimulus

39
Q

what is the other name for the spinotectal tract

A

Spino-Quadrigeminal system of Mott

40
Q

The spinoreticular tracts function as what

A

Levels of consciousness

41
Q

what is the pathway of the spinoreticular tract

A

1- posterior rood ganglion

2- ascend to nuclei of reticular formation (brainstem)

42
Q

What will happen if the spinoreticular tract is damaged

A

a coma will be present

NBS REVIEW (8 decks)

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