Neuroanatomy Flashcards

1
Q

4 parts of the CNS

A
  1. Brain
  2. Spinal cord
  3. Encased meningeal layers
  4. Ventricular system and CSF
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2
Q

6 parts of PNS

A
  1. Cranial nerves (face and head)
  2. Spinal nerves
  3. Somatic nervous system
  4. Visceral nervous system
  5. Cranial/ spinal ganglia
  6. Enteric NS
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3
Q

What do we call direction when talking about the brain

A

Anatomical references

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4
Q

Anatomical reference towards nose is called…

A

Anterior (or rostral)

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5
Q

Direction pointing towards tail is called…

A

Posterior (or caudal)

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6
Q

Direction pointing up…

A

Dorsal

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7
Q

Direction pointing down…

A

Ventral

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8
Q

Name for line running down middle of NS

A

Midline

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9
Q

Structures closest to the midline are…

A

Medial

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10
Q

Further from the midline…

A

Lateral

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11
Q

Two structures that are on the same side of the midline are…

A

Ipsilateral

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12
Q

Contralateral means…

A

Structures on opposite sides of the midline

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13
Q

Section going down the midline

A

Midsagittal

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14
Q

Section perpendicular to midline (splits anterior and posterior)

A

Coronal

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15
Q

Section splitting dorsal and ventral

A

Horizontal

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16
Q

Where dose a spinal nerve connect to the spinal cord

A

Dorsal root

Ventral root

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17
Q

Describe the somatic PNS

A
  1. All the spinal nerves that innervate the skin, joints and muscles under voluntary control
  2. Motor neurones in the ventral spinal cord (bodies within CNS but axons in PNS)
  3. Somatic sensory axons which collect info enter via dorsal root. Cell bodies outside CNS in dorsal root ganglia
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18
Q

Describe the Visceral PNS (ANS)

A
  1. Involuntary

2. Glands, arteries

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19
Q

Away from:

A

Efferent: axons innervating

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20
Q

Towards:

A

Afferent: sensory axons

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21
Q

Define a nerve fibre (PNS)

A

An axon + attendant glial cells

22
Q

Define a nerve (PNS)

A

A collection of nerve fibres

23
Q

Define a ganglion (PNS)

A

A collection of neuronal cell bodies

24
Q

Define a tract (CNS)

A

A collection of nerve fibres

25
Q

Define a nucleus (CNS)

A

Collection of neuronal cell bodies

26
Q

Describe the location of each lobe of the brain

A

Frontal: front

Partial: top posterior

Occipital: back

Temporal: side

Insular: within the brain

27
Q

Forebrain (featal)

A

Prosencephalon

28
Q

Prosencephalon divides into…

A

Telencephalon

Diencephalon

29
Q

Telencephalon becomes…

A

Cerebral hemispheres

30
Q

Diencephalon becomes…

A
  1. Thalamus
  2. Hypothalamus
  3. Epithalamus
  4. Subthalamus
31
Q

Midbrain featal name

A

Mesencephalon

32
Q

Mesencephalon becomes…

A

Cerebral peduncles & Tectum

33
Q

Hindbrain featal name

A

Rhombencephalon

34
Q

Rhombenceohalon divides into

A

Myelenceohalon

Metencephalon

35
Q

Myelenceohalon becomes…

A

Medulla oblongata

36
Q

Metencephalon becomes…

A

Pons
&
Cerebellum

37
Q

Brain stem consists of…

A
  1. Cerebral peduncles and Tectum
  2. Medulla
  3. Pons
38
Q

Order of meningeal layers from out to In

A
  1. Dura
  2. Arachnoid
  3. Pia
39
Q

Describe the Dura mater

A

Outer (endosteal) layer attaches to skull, inner adheres to arachnoid

40
Q

The two Dural folds

A
  1. Falx cerebri: separates the two hemispheres

2. Tentorium cerebelli: divides the cerebellum from cerebrum

41
Q

Subdural space:

A

‘Potential’ space between dura and arachnoid

42
Q

Describe the arachnoid mater

A
  1. Arachnoid villi penetrates the dura mater

2. Connective tissue filaments (trabeculae) connect to pia mater

43
Q

Describe the pia mater

A
  1. Thinnest membrane that follows the contour of the brain
  2. Aids in production of CFS
  3. Subarachnoid space contains CSF
44
Q

What’s the cranium (Calvaria)

A
  • upper part of skull, protects the brain

- houses ear structures

45
Q

What’s the facial skeleton (viscero- cranium)

A
  1. Detailed bones of the face

2. Include eyes and jaw etc…

46
Q

Where is CSF produced

A

Choroid plexus

47
Q

Where is CSF absorbed

A

Arachnoid villi

48
Q

What are the two pairs of vessels that supply blood to the brain

A
  1. Internal carotid arteries

2. Vertebral arteries

49
Q

Internal carotid arteries

A
  • arise from common carotid artery

- enters the middle fossa through carotid canal

50
Q

Vertebral arteries

A
  • arise from subclavian artery

- enters through the foremen magnum