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CNS Anatomy > Cerbral Hemisphere > Flashcards

Cerbral Hemisphere Flashcards

1
Q

Border between lateral & medial surfaces

A

Medial or superomedial border

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2
Q

Border between lateral & inferior surfaces

A

Inferolateral border

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3
Q

Border between inferior & medial surfaces

A

Inferiomedial border

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4
Q

Lateral or superolateral lateral surface

A

Convex and related to the brain

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5
Q

Medial surface

A

Flat & ventrical and related to falx cerebri & median longitudinal fissure

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6
Q

Inferior surfaces

A

Divided into the orbital and tentorial parts by the lateral sulcus

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7
Q

Surface of each hemisphere has numerous ___

A

Folds called GYRI

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8
Q

The folds (gyri) are separated by __

A

Grooves called sulcus

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9
Q

Separates the frontal lobe from parietal lobe

A

Central sulcus

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10
Q

Separates the temporal lobe from the frontal and parietal lobes

A

Lateral sulcus

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11
Q

Separates the occipital lobe from the parietal lobe on the medial surface

A

Parieto-occipital sulcus

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12
Q

Frontal lobe is Located in

A

Precentral gyrus

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13
Q

Frontal lobe controls

A

Voluntary & skilled movement

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14
Q

On the lateral surface of PREMOTOR CORTEX includes

A

Posterior part of superior, middle and inferior frontal gyri

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15
Q

On the medial surface of PREMOTOR CORTEX includes

A

Supplementary motor cortex

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16
Q

Frontal eye field is located in

A

Middle frontal gyrus

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17
Q

Frontal eye field controls

A

Voluntary conjugate deviation of the eyes

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18
Q

Frontal eye field damage causes

A

Deviation of the eyes towards the side of the lesions

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19
Q

Broca’s area is located in

A

inferior frontal gyrus of the dominant hemisphere

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20
Q

Broca’s area is involved in

A

Language function

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21
Q

Broca’s motor area is connected with parts of

A

ipsilateral temporal, parietal and occipital lobes

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22
Q

Prefrontal cortex extensive region of the

A

Frontal lobe anterior to premotor area

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23
Q

Prefrontal cortex functions

A

Intellectual, judgmental and the planning of behavior

24
Q

Parietal lobe is located in

A

Post central gyrus

25
Q

Parietal lobe is the final relay station for

A

general conscious level

26
Q

Carotid system is composed of

A

Internal carotid artery and its branches

27
Q

Internal carotid artery branches

A

Anterior cerebral artery
Middle cerebral artery

28
Q

The two vertebral artery united to form

A

Basilar artery

29
Q

Basilar artery divides at the upper border of pons into

A

Posterior cerebral artery

30
Q

ACA supplies

A

orbital and medial surfaces of the frontal and parietal lobes

31
Q

MCA supplies

A

Superolateral surface:
Somatosensory Cortex
Motor Cortex
Language areas: Broca’s Area
Auditory areas: Primary auditory area
Auditory association

32
Q

PCA supplies

A
  • Inferior medial surfaces of temporal lobe, Uncus, Inferior temporal gyrus
  • Inferior and Medial parts of Occipital lobe (visual areas)
33
Q

joins the Carotid & Vertebrobasilar systems

A

Circulus arteriosus

34
Q

Circulus arteriosus (of willis) located in

A

On the base of the brain

35
Q

Circulus arteriosus (of willis) it encircles

A

Optic Chiasma, Hypothalamus Pituitary gland Midbrain

36
Q

Circus arteriosus (of willis) composed of

A

2 anterior cerebral arteries
2 internal carotid arteries
2 posterior cerebral arteries
2 posterior communicating arteries
1 anterior communicating artery

37
Q

Arterial disorders

A

Stroke
Aneurysm
Angioma

38
Q

ACA disorders

A
  1. Motor & sensory disturbances in the contralateral distal leg
  2. Difficulty in the Prefrontal lobe
    functions: Cognitive thinking, Judgment. Motor initiation and Self monitoring
39
Q

MCA disorders

A
  • Contralateral weakness & sensory loss of FACE,ARM,HAND&LEG
  • visual field cut
  • Aphasia (language disturbance)
40
Q

PCA disorders

A
  • Visual disturbances :
    Contralateral homonymous hemianopia
    Bilateral lesions :
    Cortical blindness
    patients unaware they cannot see
  • Memory impairment :
    IF the temporal lobe is affected
41
Q

(Superficial) Cortical veins found in the subarachnoid space drain into

A

Cortical surfaces

42
Q

Deep veins drain the

A

Deeper structures

43
Q

Superficial & deep veins are thin walled and devoid of valves. They drain into

A

Dural venous sinuses

44
Q

Superior cerebral veins drain above the

A

Lateral surface of brain above the lateral sulcus

45
Q

Superior cerebral veins terminate mainly into the ____ partially into ______

A

Superior sagittal sinus
Superficial middle cerebral vein

46
Q

Inferior cerebral veins run below the

A

Lateral sulcus

47
Q

Inferior cerebral veins drain the

A

Lateral surface of the temporal lobe

48
Q

Inferior cerebral veins terminate partly into

A

Superficial middle cerebral vein
Transverse sinus

49
Q

Superficial middle cerebral vein runs along

A

Lateral sulcus

50
Q

Superficial middle cerebral vein terminate into the

A

cavernous sinus

51
Q

Deep cerebral veins drain the

A

Internal structures

52
Q

Deep cerebral veins merge to form

A

2 internal cerebral veins —> unite in the midline to form GREAT CEREBRAL VEIN

53
Q

Dural venous sinus (paired)

A

Transverse
Sigmoid
Cavernous
Petrosal ( sup & inf)

54
Q

Dural venous sinus (single)

A

Superior
Sagittal
Inferior
Straight
Occipital

55
Q

In the Dural venous sinuses blood flows from

A

transverse &sigmoid sinuses into IJV

CNS Anatomy (10 decks)

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