Brainscape's Knowledge GenomeTM

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


See full index

Nervous Sytem And Neuropsychiatry > Session 1 - Basic Topography > Flashcards

Session 1 - Basic Topography Flashcards

1
Q

What are the basic components of the central nervous system?

A

Cerebral hemispheres
Brainstem and cerebellum
Spinal cord

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

What are the basic components of the peripheral nervous system?

A

Dorsal and ventral roots
Spinal nerves
Peripheral nerves

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

Is everything within the vertebral column part of the CNS?

A

No, the cauda equina is made up of dorsal and ventral roots, which are part of the PNS.

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

Are grey and white matter found in the peripheral nervous system?

A

No, the terms grey and white matter are only used with respect to the central nervous system.

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

What is grey matter composed of?

A

Cell bodies and dendrites.

Highly vascular.

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

What is white matter composed of?

A

Axons (with their supporting cells).

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

Which type of matter is more myelinated; white or grey?

A

White matter is more myelinated than grey matter. It is white due to the presence of fatty myelin.

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

What can be seen as the PNS equivalent of grey matter?

A

Ganglions

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

What is a ganglion?

A

A group of cell bodies found in the peripheral nervous system.

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

Why is the term basal ganglia misleading?

A

The word ganglia suggests that it is a group of cell bodies in the PNS, but basal ganglia are CNS structures.

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

What can be seen as the PNS equivalent of white matter?

A

Peripheral nerves

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

At what vertebral level does the spinal cord become the cauda equina?

A

L1/2

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

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

A

The cord has a central core of grey matter and an outer shell of white matter.

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

The spinal cord is composed of around how many segments?

A

31 segements

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

Each segment of the spinal cord connects to a spinal nerve through what roots?

A

Dorsal (sensory) roots and ventral (motor) roots

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

What is a funiculus?

A

A segment of white matter containing multiple distinct tracts. Impulses travel in multiple directions.

E.g. the dorsal funiculus

17
Q

What is a tract?

A

An anatomically and functionally defined white matter pathway connecting two distinct regions of grey matter. Impulses travel in one direction.

E.g. the dorsal column tract.

18
Q

What is a fasciculus?

A

A subdivision of a tract supplying a distinct region of the body.

E.g. the fasciculus gracilis and fasciculus cutaneous in the dorsal column tract.

19
Q

What are the three funiculi in the spinal cord?

A

Dorsal funiculus
Lateral funiculus
Ventral funiculus

20
Q

What is a nucleus?

A

A group of functionally related cell bodies found in the CNS.

21
Q

Is a nucleus grey or white matter?

A

Grey matter

22
Q

What is the cortex?

A

A folded sheet of cell bodies found on the surface of the brain. Grey matter.

23
Q

What is a fibre?

A

A term relating to an axon in association with its supporting cells (e.g. oligodendrocytes or Schwann cells). Used synonymously with ‘axon’. White matter.

24
Q

What are association fibres?

A

Axons connecting cortical regions of the brain within the same hemisphere.

25
Q

What are commissural fibres?

A

Axons connecting the left and right hemispheres. E.g. corpus callosum

26
Q

What are projection fibres?

A

Axons connecting the cerebral hemispheres with cord/brain stem and vice versa.

27
Q

What are the three parts of the brainstem and what are they mainly responsible for?

A

Midbrain (mesencephalon):
- eye movements and reflex responses to sound and vision

Pons:

  • feeding
  • sleep

Medulla:

  • cardiovascular and respiratory centres
  • contains a major motor pathway (medullary pyramids)
28
Q

Which gyrus contains the primary motor cortex?

A

Precentral gyrus

29
Q

Which gyrus contains the primary sensory cortex?

A

Postcentral gyrus

30
Q

The primary visual cortex surrounds which sulcus?

A

Calcarine sulcus

31
Q

Where is CSF produced?

A

Choroid plexuses found in the brain ventricles.

32
Q

Where is CSF reabsorbed?

A

Arachnoid granulations (and some other sites)

Nervous Sytem And Neuropsychiatry (18 decks)

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