Spinal Anatomy Tracts (CNS) Flashcards Preview

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Flashcards in Spinal Anatomy Tracts (CNS) Deck (43):
0

Sensory comes from what type of fibers

Afferent

1

Motor fibers are what type of fibers

Efferent

2

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

Precise and skilled voluntary movement

3

What is the origin and destination of the corticospinal tracts

Primary and Secondary motor cortex, parietal lobe

Internuncial neurons or alpha motor neurons

4

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

1) Length of the cord
2) Stops mid-thoracic

5

the reticulospinal (pontine and medullary) functions to do what

Inhibit or facilitate voluntary movement

6

what is the origin and destination of the Reticulospinal tract

Reticular formation

Alpha and Gamma Motor Neurons

7

Where does the Renticulospinal tract decussate

at various locations

8

what is the function of the tectospinal tract

reflex postural movement to visual stimuli

9

what is the origin and destination of the tectospinal tract

Superior colliculus (midbrain)

Alpha and gamma motor neuron

10

The Rubrospinal tract functions to do what

Facilitates flexors and inhibits extensors

11

what is the origin and destination of the the Rubrospinal tract

Red nucleus (midbrain)

Alpha and Gamma motor neurons

12

the vestibulospinal tract tract functions as what

Facilitates extensors and inhibits flexors

13

what is the origin and destination of the vestibulospinal tract

Lateral vestibular nucleus

Alpha and Gamma motor neurons

14

the vestibulospinal tract receives information from where

Inner ear (via vestibular nerve) and cerebellar information

15

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

Descending (Motor) tracts

16

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

Ascending (sensory) tracts

17

What is the function of the Lat. Spinothalamic thract

Pain and temperature

18

what is the Pathway of the Lateral spinothalamic tract

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

19

the Posterior lateral nucleus of the thalamus relays info where

PostCentral gyrus

20

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

Syringomyelia

21

What is the function of the Anterior Spinothalamic tract

"Protopathic" is defensive to pain, temperature

Crude light touch

22

what is the pathway of the Anterior spinothalamic tract

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

23

Tactile sensation is found in what Tract

Anterior spinothalamic

24

what are the two tracts of the dorsal column

Fasciculus Cuneatus and Fasciculus Gracilis

25

What is the function of the posterior columns

Discriminative touch (2point), Vibration and conscious proprioception

26

what is the pathway of the dorsal columns

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

27

Cuneatus is above what spinal level

T6

28

Gracilis is below what spinal level

T6

29

what are some diseases that affect the dorsal columns

Diabetes mellitus
Posteriolateral sclerosis (PLS)
tabes dorsales (syphilis)

30

Posterior spinocerebellar tract function as what

Unconscious proproception

31

what is the pathway of the Posterior spinocerebellar tract

1- posterior root ganglion
2- Nucleus dorsalis (clark's column) ascend through inferior cerebellar peduncle to cerebellum

32

The Posterior Spinothalamic tract travels through what

PI-Posterior inferior peduncle

33

the Anterior Spinothalamic tract function with what

unconscious proprioception

34

what is the pathway of the anterior spinothalamic tract

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

35

which peduncle does the anterior spinocerebellar tract pass through

AS- Anterior Superior peduncle

36

the spinotectal tract functions with what

Spino visual reflexes

37

What is the pathway of the Spinotectal tract

1- Posterior rood ganglion
2- crosses segmentally and ascend to superior colliculus (Midbrain)

38

Spinotectal tract causes what to move with reflexes

movements of eyes and head toward stimulus

39

what is the other name for the spinotectal tract

Spino-Quadrigeminal system of Mott

40

The spinoreticular tracts function as what

Levels of consciousness

41

what is the pathway of the spinoreticular tract

1- posterior rood ganglion
2- ascend to nuclei of reticular formation (brainstem)

42

What will happen if the spinoreticular tract is damaged

a coma will be present