Brainscape's Knowledge GenomeTM

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


See full index

Neuro > Spinal column & Autonomic nervous system > Flashcards

Spinal column & Autonomic nervous system Flashcards

1
Q

Describe the distribution of white and grey matter in the brain.

A

White on the inside

Grey on the outside

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

Describe the distribution of white and grey matter in the spinal cord.

A

White on the outside

Grey on the inside

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

Equivalent word for dorsal?

A

Posterior

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

Equivalent word for ventral?

A

Anterior

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

What part of the spinal cord has a lateral horn?

A

T1 - L2

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

What does the dorsal column - medial leminiscus pathway convey?

A

Fine touch and proprioception

Sensory

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

What does the spinothalamic tract convey?

A

Pain, temperature and crude touch

Sensory

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

What does the corticospinal tract convey?

A

Axial and limb movement

Motor

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

At what level does dessucation occur in the dorsal column - medial leminiscus pathway?

A

At the medulla

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

At what level does dessucation occur in the spinothalamic tract?

A

1-2 levels above entry to spinal cord

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

At what level does dessucation occur in the corticospinal tract?

A

For limb fibres: medulla

For axial fibres: level of exit from spinal cord

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

What is the destination of the neurons in the lateral corticospinal tract?

A

Limb muscles

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

What is the destination of the neurons in the anterior corticospinal tract?

A

Axial muscles

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

Briefly describe the journey of the dorsal column - medial leminiscus pathway beginning in the lower limb.

A

Lower limb > dorsal root ganglion > Spinal cord - Gracile nucleus > up to medulla > decussates > up to thalamus > ventral posterolateral nucleus of thalamus > post central gyrus

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

Briefly describe the journey of the dorsal column - medial leminiscus pathway beginning in the upper limb.

A

Upper limb > dorsal root ganglion > Spinal cord - Cuneate nucleus > up to medulla > decussates > up to thalamus > ventral posterolateral nucleus of thalamus > post central gyrus

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

Briefly describe the journey of the spinothalamic tract.

A

Nerve endings/receptors in body > dorsal root ganglion > Spinal cord - Lissauer’s fasciculus > up 1 or 2 levels > dorsal horn of grey matter - substantia gelatinosa or nucleus proprius > decussates at anterior white commissure > ascends via spinothalamic fasciculus > thalamus > post-central gyrus

17
Q

Briefly describe the journey of the corticospinal tract going to the limb muscles.

A

Pre-central gyrus > through internal capsule to midbrain > decussates at medulla (75-90% fibres) > down spinal cord via lateral corticospinal tract > anterior horn cells > neuron to limb muscles

18
Q

Briefly describe the journey of the corticospinal tract going to the axial muscles.

A

Pre-central gyrus > through internal capsule to midbrain > down spinal cord via anterior corticospinal tract > decussates at anterior white commissure > anterior horn cells > neuron to axial muscles

19
Q

Which are the upper motor neurons in the corticospinal tract?

A

From brain to anterior horn cell

20
Q

Which are the lower motor neurons in the corticospinal tract?

A

From anterior horn cell to muscles

21
Q

What is Brown-Sequard syndrome?

A

Unilateral lesion of the spinal cord

Ipsilateral weakness below lesion (corticospinal tract)

Ipsilateral loss of touch sensation and proprioception (DC-ML)

Contralateral loss of pain and temperature sensation (spinothalamic tract)

22
Q

In Brown-Sequard syndrome, why is the weakness and loss of touch sensation & proprioception one the same side?

A

Because these spinal tracts (DC-ML and corticospinal) do not decussate until the medulla.

23
Q

In Brown-Sequard syndrome, why is the loss of pain and temperature sensation on the other side?

A

Because the spinothalamic tract decussates 1-2 levels above the nerve’s entry to the spinal cord.

24
Q

What does the autonomic nervous system consist of?

A

Sympathetic & parasympathetic

and enteric

25
Q

Does the autonomic nervous system require conscious thought to function?

A

No!

26
Q

What structures does the autonomic nervous system innervate?

A

Smooth muscle, cardiac muscle and glands

27
Q

Difference between parasympathetic and sympathetic?

A

Para - rest & digest

Symp - fight or flight

28
Q

What nerves make up the parasympathetic nervous system?

A

Cranial nerves 3, 7, 9 & 10

and S2-S4

29
Q

What nerves make up the sympathetic nervous system?

A

T1 - L1

30
Q

What does the enteric nervous system do?

A

Co-ordinates GI function

Neuro (18 decks)

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