Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Neurosensory > TRACTS > Flashcards

TRACTS Flashcards

1
Q

which tract is for PROPRIOCEPTION and FINE TOUCH & VIBRATION, 2 POINT TOUCH, STRETCH

A

DORSAL (POSTERIOR) COLUMN MEDIAL LEMNISCUS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

where do DORSAL COLUMN MEDIAL LEMNISCUS pathway fibres DECUSSATE

A

in the MEDULLA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

DORSAL COLUMN MEDIAL LEMNISCUS
pathway going from Receptors in the skin to where (through what)

A

through Ventral Posterolateral Nucleus of Thalamus (synapses)

to PRIMARY SOMATOSENSORY CORTEX in POST-CENTRAL GYRUS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

DORSAL COLUMN MEDIAL LEMNISCUS
- travels via FASCICULS CUTANEOUS and synapses at Nucleus Cutaneous at which level

  • travels via FASCICULUS GRACILIS and synapses at Nucleus Gracilis at which level
A

FC - ABOVE T6

FG - BELOW T6

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

which pathway has 2 DECUSSATIONS therefore making innervation IPSILATERAL

A

SPINOCEREBELLAR Tract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

DORSAL COLUMN MEDIAL LEMNISCUS
1ST ORDER NEURONES collect where before entering spinalcord at FC or FG

A

in DRG

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

DORSAL COLUMN MEDIAL LEMNISCUS
join onto 2ND ORDER NEURONES where

A

MEDULLA

-> DECUSSATE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

DORSAL COLUMN MEDIAL LEMNISCUS
3RD ORDER NEURONES where

A

INTERNAL CAPSULE in POST-CENTRAL GYRUS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

fast pain and temperature / noxious mechanical stimuli via which fibre

A

A - DELTA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

cutaneous receptors for non-noxious mechanical stimuli via which fibre

A

A - BETA

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

slow pain and temperature / noxious heat and chemical stimuli via which fibre

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

which tract is for PAIN & TEMPERATURE

A

LATERAL SPINOTHALAMIC Tract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

which tract is for CRUDE TOUCH (cannot localise site) and PRESSURE

A

ANTERIOR / VENTRAL SPINOTHALAMIC Tract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

SPINOTHALAMIC PATHWAY comes from which skin RECEPTORS

A

MERKEL DISCS
FREE NERVE ENDINGS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

SPINOTHALAMIC PATHWAY uses which FIBRES

A

A - DELTA (fast pain)
C (slow pain)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

SPINOTHALAMIC PATHWAY goes from skin receptors through the … (synapses) to where

A

through Ventral Posterolateral nucleus of Thalamus

to PRIMARY SOMATOSENSORY CORTEX in POST-CENTRAL GYRUS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

SPINOTHALAMIC Pathway DECCUSATES where

A

in the ANTERIOR WHITE COMMISSURE at the level of the Spinal Cord where it enters

18
Q

SPINOTHALAMIC pathway
1st Order Neurones:

A

in DRG

19
Q

SPINOTHALAMIC pathway
2ND ORDER NEURONES:

A

ANTERIOR WHITE COMMISSURE at the same level of the spinal cord where it enters
- after decussating

20
Q

SPINOTHALAMIC pathway
3RD ORDER NEURONES where:

A

in THALAMUS - VENTRAL POSTEROLATERAL NUCLEUS

21
Q

CORTICOSPINAL Tract
starts where and ends where

A

from PRIMARY MOTOR CORTEX in PRE-CENTRAL GYRUS
to
SPINAL CORD
(-> muscle)

22
Q

CORTICOSPINAL Tract made up of which cells

A

PYRAMIDAL CELLS - LAYER V (Int. Pyramidal)

23
Q

CORTICOSPINAL Tract
DECUSSATES where

A

90% Decussates in MEDULLA
(Pyramids - anterior)

10% remains IPSILATERAL but will decussate at spinal cord

24
Q

CORTICOSPINAL Tract
90% that DECUSSATES at MEDULLA forms which pathway and what does it innervate

A

LATERAL CORTICOSPINAL tract

-> innervates DISTAL MUSCLES
ie hands,feet

25
Q

CORTICOSPINAL Tract
10% that remains IPSILATERAL will form which pathway and what does it innervate

A

ANTERIOR CORTICOSPINAL Tract

-> innervates PROXIMAL MUSCLES
ie in trunk

26
Q

pathway of CORTICOSPINAL Tract from motor cortex to medulla

A
  • INTERNAL CAPSULE
  • Midbrain : SUPERIOR PEDUNCLE
  • Medulla : anterior PYRAMIDS (decussates)
27
Q

which pathway is UNCONSCIOUS

A

SPINOCEREBELLAR TRACT

28
Q

SPINOCEREBELLAR Tract is for..

A

PROPRIOCEPTION,
TOUCH,
PRESSURE,
COORDINATION,
Posture

29
Q

which Skin RECEPTORS are used in SPINOCEREBELLAR Tract

A
  • MEISSNER’S CORPUSCLE
  • PASCINIAN CORPUSCLE
  • RUFFINI CORPUSLE
30
Q

SPINOCEREBELLAR Tract
where are the 2 DECUSSATIONS

A

1st: SPINAL CORD - VENTRAL WHITE

2nd: CEREBELLUM
Ventral tract (below L2) : SUPERIOR PEDUNCLE

Dorsal (C8-L2) or cuneocerebellar (above C8) :
Inferior Peduncle

31
Q

SPINOCEREBELLAR Tract
where are the 1ST ORDER NEURONS

A

DRG

32
Q

SPINOCEREBELLAR Tract
where are the 2ND ORDER NEURONS

A

SPINAL CORD - Lateral White (after decussating)

33
Q

which Tract comes from MERKELS DISCS and FREE NERVE ENDINGS

A

SPINOTHALAMIC
- Pain, Temperature, Pressure, Crude Touch

34
Q

DORSAL COLUMN MEDIAL LEMNISCUS is for what

A

Sensory Ascending Conscious
PROPRIOCEPTION, FINE TOUCH, VIBRATION

35
Q

SPINOTHALAMIC is for what

A

Sensory Ascending Conscious
PAIN, TEMP, CRUDE TOUCH, PRESSURE

36
Q

SPINOCEREBELLAR is for what

A

Sensory Ascending Unconcious
PROPRIOCEPTION,
TOUCH,
PRESSURE,
COORDINATION,
POSTURE

37
Q

CORTICOSPINAL is for what

A

Motor Descending Conscious
VOLUNTARY MOVEMENT

38
Q

which tract(s) DECUSSATES at MEDULLA

A
  • DORSAL COLUMN MEDIAL LEMNISCUS
  • LATERAL CORTICOSPINAL (90%)
39
Q

which tract(s) DECUSSATES in SPINAL CORD

A
  • SPINOTHALAMIC
  • SPINOCEREBELLAR 1ST Decussation
  • CORTICOSPINAL - last 10%
40
Q

which tract innervation is IPSILATERAL

A

SPINOCEREBELLAR
(2 decussations)

41
Q

which tract is for PAIN

A

LATERAL SPINOTHALAMIC

42
Q

which tract uses FASCICULUS CUNEATUS and GRACILIS

A

DORSAL COLUMN MEDIAL LEMNISCUS

Neurosensory (17 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions