Brainscape's Knowledge GenomeTM

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


See full index

Phase I Medicine > B5 CNS: Anatomy of the Sensory Nervous System > Flashcards

B5 CNS: Anatomy of the Sensory Nervous System Flashcards

1
Q

What are the functions of the sensory nervous system?

A 
Collecting information (stimuli) from internal and external environment
Integrating, interpreting and assessing collected information
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which spinal cord root is purely sensory?

A

Dorsal

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

What is a ramus in relation to the CNS?

A

The branching of a spinal nerve after the anterior and posterior roots have combined to form a single nerve

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

Where does the spinal cord end?

A

L1-L2

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

What does the spinal cord taper off into?

A

Cornus

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

What structure is responsible for the tapering of the terminal portion of filum?

A

Pia mater

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

Where is the white matter on the spinal cord?

A

Outside region

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

Is the vagus nerve a cranial nerve?

A

Yes

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

What is the point of plexuses?

A

To redistribute nerves more efficiently

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

Give an example of a plexus?

A

C3-C5 (Phrenic nerve)

Brachioplexus- plexus from neck

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

What is a myotome?

A

Section of muscle innervated by a spinal nerve

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

What is a dermotome?

A

Section of skin innervated by a spinal nerve

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

With reference to the CNS, what are synonyms for ‘sensory’?

A

Afferent

Ascending

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

What is the difference between a fasiculus and a lemniscus?

A

Nothing

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

What is the difference between a lemniscus and a peduncle?

A

Nothing

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

What are synonyms for ‘tract’?

A

Fasiculus
Lemniscus
Peduncle

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

What are tracts?

A

Bundles of axons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Between white matter and grey matter, where would you expect to find tracts?

A

White matter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What are ganglia?

A

Collections of cell bodies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What is the difference between a bipolar and unipolar neuron?

A

Bipolar - Two axons off of the cell body

Unipolar- One axon attached to a cell body/ One axon that splits into two off the cell body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Where would you find the majority of pyramidal neurons?

A

CNS

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What are the most medial fibres of the dorsal column?

A

Gracile nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What are the most lateral fibres of the dorsal column?

A

Cuneate nucleus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Of the nuclei in the dorsal column, which one is responsible for innervating the lower limbs?

A

Gracile

25
Q

What are the lateral spinothalamic pathways responsible for?

A

Pain & Temperature

26
Q

What are the anterior spinothalamic pathways responsible for?

A

Crude touch

27
Q

What tracts are responsible for unconscious perception?

A

Spinocerebellar

28
Q

Which tracts are responsible for conscious perception?

A

Spinothalamic

Dorsal column- medial lemniscus

29
Q

What lobe of the brain is most concerned with vision?

A

Occipital

30
Q

How many sagittal zones does the cerebellum have?

A

3

31
Q

How many lobes does the cerebellum have?

A

3

32
Q

What are the most anterior bits of the cerebellum?

A

Flocculus and nodules

33
Q

What are the little bumps on the cerebellum called?

A

Folia

34
Q

How many deep cerebellar nuclei are there?

A

4

35
Q

From most lateral to most medial, what is the order of the deep cerebellar nuclei?

A

DGEF

36
Q

What are the two nuclei between the dentate and fastigal nuclei collectively known as?

A

Interpose nuclei

37
Q

How is the body mapped on the cerebellar hemispheres?

A

Ipsilaterally

38
Q

If a patient were to come in with right sided cerebellar problems, which side of their body would be affected?

A

Right

39
Q

What roles does the cerebellum have?

A

Unconscious proprioception
Constant feedback and improvement of movement
Balance

40
Q

What motor pathway can the cerebellum bypass?

A

Corticospinal

41
Q

What nuclei are responsible for the cerebellum being able to bypass a descending pathway?

A

Tranverse nuclei of pons

42
Q

Where are sympathetic neurones always found?

A

Craniosacrally

43
Q

Where are parasympathetic neurones always found?

A

Thoracolumbarly

44
Q

What are splanchnic nerves?

A

Nerves that act parasympathetic.

45
Q

What are the properties of thoracic splanchnic nerves?

A

Pre-gangionic

Tend to run to the gut

46
Q

Where do the great splanchnic nerves run from?

A

T5-T9

47
Q

Where do the lesser splanchnic nerves run from?

A

T10-T11

48
Q

Where do the least splanchnic nerves run from?

A

T12

49
Q

What are the properties of sympathetic nerves?

A

Thoracolumbar
Paravertebral + Prevertebral ganglia
Relatively long

50
Q

What are the properties of parasympathetic nerves?

A

Craniosacral
Terminal Ganglia
Relatively short

51
Q

How much longer are the sympathetic post ganglionic neurones in comparison to the pre ganglionic neurones?

A

17 times longer

52
Q

How much longer are the parasympathetic post ganglionic neurones in comparison to the pre ganglionic neurones?

A

Twice as long

53
Q

What does the sympathetic nervous system innervate?

A

Virtually everything

54
Q

What does the parasympathetic nervous system innervate?

A

Mainly visceral organs

55
Q

What structures in the nervous system are responsible for mediating reflexes?

A

Spinal cord

Brainstem medullary centres

56
Q

List examples of polysynaptic visceral reflexes?

A

Gastric and Intestinal Swallowing

57
Q

What is the autonomic innervation of the bladder?

A

Balance between sympathetic and parasympathetic supply

Sympathetic supply to parasympathetic endings turns off parasympathetics

58
Q

What controls whether sympathetic presynaptic ganglions inhibit parasympathetic endings?

A

Urination centre in pons

Phase I Medicine (46 decks)

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