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CNS > Test 2 Ascending and descending tracts > Flashcards

Test 2 Ascending and descending tracts Flashcards

1
Q

What is the main sensory neuron?

A

DRG

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2
Q

Conscious sensation is perceived by ___

A

cerebral cortex

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3
Q

Unconscious sensation is perceived by ___

A

cerebellum

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4
Q

2 functions of dorsal column medial lemniscus pathway

A

Proprioception and discriminative touch

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5
Q

DCML 1st order neurons enter spinal cord and travel up __ or __ fasciculus.

A

Cuneate

Gracile

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6
Q

Gracile Fasciculus transmits info about the ___ body and is in what part of spinal cord?

A

Lower

entire spinal cord

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7
Q

Cuneate Fasciculus transmits info about the __ body and is in which part of the spinal cord?

A

Upper

Upper half

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8
Q

2nd order DCML neurons synapse at either the __ or __ nucleus in the ___

A

cuneate
gracile
Medulla

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9
Q

Lateral Spinothalamic tract function

A

Pain and temperature

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10
Q

Anterior Spinothalamic tract function

A

Crude Touch

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11
Q

Where do Spinothlamic tract 2nd order neurons synapse?

A

Lamina 1, 4, 5

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12
Q

Where does lateral spinothalamic tract cross?

A

Over 1 segment

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13
Q

Where does anterior spinothalamic tract cross?

A

over several segments

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14
Q

Spinoreticular tract function

A

Awareness

Emotion of sensation–> pain

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15
Q

Where do 2nd order spinoreticular neurons synapse?

A

Dorsal horn 5-7

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16
Q

Where to spinoreticular fibers cross?

A

THEY DON’T.

17
Q

What is Post. Spinocerebellar tract function?

A

Fine motor control
posture
lower limb

18
Q

Where does second order post. spinocerebellar tract synapse?

A

Dorsal Nucleus of Clarke (7)

19
Q

What is cuneocerebellar tract function?

A

fine control
movement
posture
upper limb

20
Q

Where does 2nd order cuneocerebellar tract synapse?

A

Accessory cuneate nucleus

21
Q

Anterior Spinocerebellar tract function

A

Group 1 afferents
lower limb
Coordinate movement and posture

22
Q

Where does anterior spinocerebellar tract cross?

A

Anterior White Commissue and again in cerebellum

CNS (6 decks)

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