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Veterinary Anatomy III > THRC.1 > Flashcards

THRC.1 Flashcards

1
Q

List the meninges of the CNS in order of depth (starting with most superficial)

A
  • Dura mater
  • Arachnoid membrane
  • Pia mater
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2
Q

Arachnoid membrane and pia mater are collectively known as…

A

Leptomeninges

They are relatively delicate compared with dura mater

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3
Q

Unlike the neural tissue they surround, the meninges are sensitive to…

A

Pain

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4
Q

The spinal dura mater is separated from the vertebral canal by…

A

The epidural space

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5
Q

Contents of the epidural space

A
  • Fat
  • Venous plexus
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6
Q

Common epidural space injection sites

A

Spatium lumbosacrale:

  • Between:
    • Last lumbar vertebra
    • First sacral vertebra

Or

  • Between:
    • Last sacral vertebra
    • First caudal vertebra
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7
Q

What is found at the caudal end of the spinal dura mater?

A

Filum terminal durae matris

  • Blind-ending sac
  • Unites with other meninges
  • Fuses with dorsal surface of caudal vertebrae
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8
Q

Dura mater is vascularised by…

A

Spinal arteries

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9
Q

Cranial dura mater is fused with…

A

Inner periosteum of the skull

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10
Q

Falx cerebri

A

Fold of dura mater extending:

Midline of the longitudinal cerebral fissure → Between the hemispheres

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11
Q

Caudally, falx cerebri meets which structure?

A

Tentorium cerebelli

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12
Q

Which partition covers the roof of the hypophyseal fossa?

A

Diaphragma sellae

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13
Q

True or false - Cranial nerves are surrounded by dural sheaths?

A

True

Until they leave the dural cavity

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14
Q

Where can infection spread from the lymphatic system to the meninges and neural tissue?

A

The cuffs, surrounded by CSF where the cranial nerves exit the skull

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15
Q

Cranial dura mater is vascularised by…

A

Meningeal arteries

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16
Q

Arachnoid membrane

A

2-part membrane cell layer moulded against:

  • Dura mater
  • Pia mater
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17
Q

Area found between the two arachnoid membrane cell layers

A

Subarachnoid space

filled with CSF

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18
Q

Enlargements of the subarachnoid space

A

Cisternae

Used for:

  • Injection
  • CSF extranction
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19
Q

Pacchioni granulations

A

Mushroom-shaped projections extending from the arachnoid membrane into dural venous sinuses

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20
Q

Pia mater is in direct contact with the…

A

Glial limiting membrane of the neural tissue

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21
Q

Describe the structure of pia mater along the spinal cord

A

Bilaterally thickened along the lateral surface

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22
Q

Describe the spread of the denticulate ligament

A
  • Traverse the subarachnoid space
  • Attach to dura mater
  • Suspending the spinal cord
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23
Q

After entering the brain,… is surrounded by the pia mater for a short distance

A

Cranial vessels

Its thought that CSF can enter these vessels

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24
Q

Where does the main blood supply for the brain originate from outside the skull?

A

Eq/Ca/Su: Internal carotid arteries

  • From a. maxillaris et vertebralis:
    • Ru: Rete mirabile epidurale rostrale
    • Fe: Rami retes
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25
Q

Which receives more blood?

  • White matter
  • Grey matter
A

Grey matter

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26
Q

Blood-brain barrier

A

Reduced permeability between:

  • Capillary endothelium
  • Surrounding glial cells
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27
Q

Give the groups of veins of the brain

A
  • Dorsal
  • Basal/ventral
  • Inner
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28
Q

Dorsal vein system collects blood from…

A
  • Dorsal parts of the brain
  • Bones of the cranial vault
29
Q

The connection between the ventral and dorsal venous systems

A
  • Transverse sinuses (Dorsal group)
  • Temporal sinus (Ventral group)

Not in Eq

30
Q

The ventral/basilar venous group drains blood from…

A
  • Ventral brain
  • Parts of the face
31
Q
A

Artery of callous body

32
Q
A

Middle cerebral artery

33
Q
A

Internal carotid artery

34
Q
A

Arterial circle

35
Q
A

Caudal cerebral artery

36
Q
A

Basilar artery

37
Q
A

Rostral cerebellar artery

38
Q
A

Caudal cerebellar artery

39
Q
A

Branch of the vertebral artery

40
Q
A

Ventral spinal artery

41
Q
A

Rostral dorsal cerebral vein

42
Q
A

Middle dorsal cerebral vein

43
Q
A

Caudal dorsal cerebral vein

44
Q
A

Temporal sinus

45
Q
A

Dorsal sagittal sinus

46
Q
A

Transverse sinus

47
Q
A

Ophthalmic plexus

48
Q
A

Rostral intercavernous sinus

49
Q
A

Caudal intercavernous sinus

50
Q
A

Basilar sinus

51
Q
A

Temporal sinus

52
Q
A

Ventral petrosal sinus

53
Q
A

Dorsal petrosal sinus

54
Q
A

Chiasmatic groove

55
Q
A

Middle cerebral artery

56
Q
A

Cerebral carotid artery

57
Q
A

Rostral epidural rete mirabile

58
Q
A

Basilar artery

59
Q
A

Caudal cerebellar artery

60
Q
A

Internal carotid artery

61
Q
A

Dura mater

62
Q
A

Subarachnoid cavity

63
Q
A

Diaphragma sellae

64
Q
A

Cerebral falx

65
Q
A

Subarachnoidal cavity

66
Q
A

Epidural cavity

67
Q
A

Encephalic arachnoid

68
Q
A

Denticulate ligament

Veterinary Anatomy III (124 decks)

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