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
Parietal lobe is the final relay station for
general conscious level
26
Carotid system is composed of
Internal carotid artery and its branches
27
Internal carotid artery branches
Anterior cerebral artery Middle cerebral artery
28
The two vertebral artery united to form
Basilar artery
29
Basilar artery divides at the upper border of pons into
Posterior cerebral artery
30
ACA supplies
orbital and medial surfaces of the frontal and parietal lobes
31
MCA supplies
Superolateral surface: Somatosensory Cortex Motor Cortex Language areas: Broca's Area Auditory areas: Primary auditory area Auditory association
32
PCA supplies
- Inferior medial surfaces of temporal lobe, Uncus, Inferior temporal gyrus - Inferior and Medial parts of Occipital lobe (visual areas)
33
joins the Carotid & Vertebrobasilar systems
Circulus arteriosus
34
Circulus arteriosus (of willis) located in
On the base of the brain
35
Circulus arteriosus (of willis) it encircles
Optic Chiasma, Hypothalamus Pituitary gland Midbrain
36
Circus arteriosus (of willis) composed of
2 anterior cerebral arteries 2 internal carotid arteries 2 posterior cerebral arteries 2 posterior communicating arteries 1 anterior communicating artery
37
Arterial disorders
Stroke Aneurysm Angioma
38
ACA disorders
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
MCA disorders
- Contralateral weakness & sensory loss of FACE,ARM,HAND&LEG - visual field cut - Aphasia (language disturbance)
40
PCA disorders
- Visual disturbances : Contralateral homonymous hemianopia Bilateral lesions : Cortical blindness patients unaware they cannot see - Memory impairment : IF the temporal lobe is affected
41
(Superficial) Cortical veins found in the subarachnoid space drain into
Cortical surfaces
42
Deep veins drain the
Deeper structures
43
Superficial & deep veins are thin walled and devoid of valves. They drain into
Dural venous sinuses
44
Superior cerebral veins drain above the
Lateral surface of brain above the lateral sulcus
45
Superior cerebral veins terminate mainly into the ____ partially into ______
Superior sagittal sinus Superficial middle cerebral vein
46
Inferior cerebral veins run below the
Lateral sulcus
47
Inferior cerebral veins drain the
Lateral surface of the temporal lobe
48
Inferior cerebral veins terminate partly into
Superficial middle cerebral vein Transverse sinus
49
Superficial middle cerebral vein runs along
Lateral sulcus
50
Superficial middle cerebral vein terminate into the
cavernous sinus
51
Deep cerebral veins drain the
Internal structures
52
Deep cerebral veins merge to form
2 internal cerebral veins —> unite in the midline to form GREAT CEREBRAL VEIN
53
Dural venous sinus (paired)
Transverse Sigmoid Cavernous Petrosal ( sup & inf)
54
Dural venous sinus (single)
Superior Sagittal Inferior Straight Occipital
55
In the Dural venous sinuses blood flows from
transverse &sigmoid sinuses into IJV