Spinal Anatomy Tracts (CNS)

Question 0

Motor fibers are what type of fibers

Answer 0

Efferent

Question 1

Sensory comes from what type of fibers

Answer 1

Afferent

Question 2

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

Answer 2

Precise and skilled voluntary movement

Question 3

What is the origin and destination of the corticospinal tracts

Answer 3

Primary and Secondary motor cortex, parietal lobe

Internuncial neurons or alpha motor neurons

Question 4

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

Answer 4

1) Length of the cord

2) Stops mid-thoracic

Question 5

the reticulospinal (pontine and medullary) functions to do what

Answer 5

Inhibit or facilitate voluntary movement

Question 6

what is the origin and destination of the Reticulospinal tract

Answer 6

Reticular formation

Alpha and Gamma Motor Neurons

Question 7

Where does the Renticulospinal tract decussate

Answer 7

at various locations

Question 8

what is the function of the tectospinal tract

Answer 8

reflex postural movement to visual stimuli

Question 9

what is the origin and destination of the tectospinal tract

Answer 9

Superior colliculus (midbrain)

Alpha and gamma motor neuron

Question 10

The Rubrospinal tract functions to do what

Answer 10

Facilitates flexors and inhibits extensors

Question 11

what is the origin and destination of the the Rubrospinal tract

Answer 11

Red nucleus (midbrain)

Alpha and Gamma motor neurons

Question 12

the vestibulospinal tract tract functions as what

Answer 12

Facilitates extensors and inhibits flexors

Question 13

what is the origin and destination of the vestibulospinal tract

Answer 13

Lateral vestibular nucleus

Alpha and Gamma motor neurons

Question 14

the vestibulospinal tract receives information from where

Answer 14

Inner ear (via vestibular nerve) and cerebellar information

Question 15

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

Answer 15

Descending (Motor) tracts

Question 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

Answer 16

Ascending (sensory) tracts

Question 17

What is the function of the Lat. Spinothalamic thract

Answer 17

Pain and temperature

Question 18

what is the Pathway of the Lateral spinothalamic tract

Answer 18

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

Question 19

the Posterior lateral nucleus of the thalamus relays info where

Answer 19

PostCentral gyrus

Question 20

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

Answer 20

Syringomyelia

Question 21

What is the function of the Anterior Spinothalamic tract

Answer 21

“Protopathic” is defensive to pain, temperature

Crude light touch

Question 22

what is the pathway of the Anterior spinothalamic tract

Answer 22

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

Question 23

Tactile sensation is found in what Tract

Answer 23

Anterior spinothalamic

Question 24

what are the two tracts of the dorsal column

Answer 24

Fasciculus Cuneatus and Fasciculus Gracilis

Question 25

What is the function of the posterior columns

Answer 25

Discriminative touch (2point), Vibration and conscious proprioception

Question 26

what is the pathway of the dorsal columns

Answer 26

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

Question 27

Cuneatus is above what spinal level

Answer 27

T6

Question 28

Gracilis is below what spinal level

Answer 28

T6

Question 29

what are some diseases that affect the dorsal columns

Answer 29

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

Question 30

Posterior spinocerebellar tract function as what

Answer 30

Unconscious proproception

Question 31

what is the pathway of the Posterior spinocerebellar tract

Answer 31

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

Question 32

The Posterior Spinothalamic tract travels through what

Answer 32

PI-Posterior inferior peduncle

Question 33

the Anterior Spinothalamic tract function with what

Answer 33

unconscious proprioception

Question 34

what is the pathway of the anterior spinothalamic tract

Answer 34

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

Question 35

which peduncle does the anterior spinocerebellar tract pass through

Answer 35

AS- Anterior Superior peduncle

Question 36

the spinotectal tract functions with what

Answer 36

Spino visual reflexes

Question 37

What is the pathway of the Spinotectal tract

Answer 37

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

Question 38

Spinotectal tract causes what to move with reflexes

Answer 38

movements of eyes and head toward stimulus

Question 39

what is the other name for the spinotectal tract

Answer 39

Spino-Quadrigeminal system of Mott

Question 40

The spinoreticular tracts function as what

Answer 40

Levels of consciousness

Question 41

what is the pathway of the spinoreticular tract

Answer 41

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

Question 42

What will happen if the spinoreticular tract is damaged

Answer 42

a coma will be present