S4: Anatomy of the Spinal cord Flashcards Preview

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Flashcards in S4: Anatomy of the Spinal cord Deck (48)
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1
Q

Name:

the pathways, their sites of origin, and a general statement of their function.

A

lateral corticospinal tract

function – voltunary movement, particular discete digit movements

pathology – same side paralysis of distal muscles below lesion

origin – cortex

termination – gray matter at all spinal segments

2
Q

name, origin, termination, function?

A

gracile fasiculus

origin – epicritc (DML) and proprioceptive (dorsal spinocerebellar) info from lower body

terminate – gracile nucleus in the medulla

X - ipsilateral loss of epicritic below the lesion

3
Q

name, origin, termination, function?

A

cuneate fasculus

from – carries epicritic and proprioceptive from upper half of the body

terminates – cuneate nculeus in the medulla

X - ipsilateral loss of epicritc below the lesion

4
Q

name, origin, function?

A

hypothalamo-reticulo-spinal tract

function – caries pregang. symps to the IML

from – the hypothalamus and reticular formation

to – IML

X – same side horners syndrome

5
Q

name, origin, termination, function?

A

Anterolateral tract

function – carries propathic (simple toucn pressure pain temp) from opposite side of the body

pathology - CONTRLATERAL loss of propathic sensation

origin - sensory neurons in dorsal horn

termination - brainstem reticular formation and other parts of midbrian, thalamus (VPL, DM, and intralamianr nuceli)

6
Q

name, origin, function?

A

ventral / anterior corticospinal tract

function - voluntary moivement, particularly axial and proximal muscle

origin - cortex

to - itnermediate grea area

7
Q

name, origin, termination, function?

A

Lissauer’s tract (dorsolateral tract )

function - transmists small diamter axons (like ALS) carrying pain and temp to dorsal horn

origin - pain and temp neurons

to - dorsal horn

8
Q

identify or name the sites of origin and termination and basic function(s)

A

gracile fasciculus

function — carries epicritic from lower body

pathology – loss of epicritc info below the lesion on the same side

9
Q

identify or name the sites of origin and termination and basic function

A

cuneate fascilulus

function – carries epicritc information from the upper body

X - ispilateral loss of epicritic below the lesion

10
Q
A

ventral corticospinal tract

function – voltunary movement

pathology - ispilateral paralysis of proximal muscle below the lesion

11
Q
A

hypothalamo-reticulo-spinal tract

function - carries pregang parasymps

from - hypothalamus and reticular formation

to - IML

pathology - same side horners

12
Q

function, origin, termination, pathology

A

dorsal spinocerebellar tract

function - carries prroprioceptive ifnromation to the cerebellum from the lower half of the body

from: propriosptive sensory neurons via gracile fasciulus and clarks nucleus
temrinate: cerebellum via the inferior cerebellar peduncle

13
Q
A

rubrospinal tract (not apparent caudal to the cervical enlargement)

function – distal motor control

pathology – ipsilateral loss of distal motor control elow lesion

from – red nculeus

to – lateral protion of grey matter

14
Q
A

Lissauer’s tract (dorsolateral tract )

carries pain and temp information

15
Q
A

. ventral (anterior) corticospinal tract

  • ipsilateral voluntary muscle control, to more proximal muscles
16
Q
A

gracile fasciculus

carries epicritc from DML

and proprioceptive from spinocerebellar

for lower part of body

17
Q
A

cuneate fasciculus

18
Q
A

rubrospinal tract

function – voluntary motor control

origin – red nucleus

to: lateral portions of gray matter

19
Q
A

lateral corticospinal tract

20
Q
A

ALS

21
Q
A

hypothalamo-reticulo-spinal tract

carries pregang parasymps to IML

X - ipsilateral horners syndrome

22
Q
A

gracile fasciculus

23
Q
A

ventral (anterior) corticospinal tract

24
Q
A

lateral corticospinal tract

25
Q
A

rubrospinal tract

26
Q
A

anterolateral tract

27
Q
A

gracile fasciculus

28
Q
A

Lissauer’s tract

29
Q
A

lateral corticospinal tract

30
Q
A

anterolateral

31
Q

red

what does this carry?

what does X to this cause?

A

dorsal funiculus

epicritic information

Loss of discrete somesthetic infromation on same side of the lesion

32
Q

blue

A

lateral funiculus

33
Q

what do these contain?

A

anterior ventral funiculus

ascending and descending nerve tracts

34
Q
A

intermediate area

35
Q

where are the lateral motorneurons enlarged?

A

brachial and lumbosacral enlargements (A and C)

36
Q
A

lateral motor cell column

37
Q
A

intermedial cell column (in the throacic levels)

38
Q

What is the approximate segmental arrangement of this slide? Limb or non-limb?

A

Upper cervical - neck and back, respiration

39
Q

What is the approximate segmental arrangement of this slide? Limb or non-limb?

A

Lower cervical - upper limb, proximal arm is more rostral

40
Q

What is the approximate segmental arrangement of this slide? Limb or non-limb?

A

thoracic - lower back and stomach

41
Q

What is the approximate segmental arrangement of this slide? Limb or non-limb?

A

lumbosacral - lower back, proximal leg is more rostral

42
Q

What is the approximate segmental arrangement of this slide? Limb or non-limb?

A

sacral - pelvis

43
Q
A

extrapyramidal tracts

44
Q
A

lateral cortical spinal tract

45
Q
A

extrapyramidal tract

46
Q
A

extrapyramidal tract

47
Q
A

extrapyramidal tract

48
Q
A

extrapyramidal