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3 NERVOUS SYSTEM > BLOOD SUPPLY OF BRAIN > Flashcards

BLOOD SUPPLY OF BRAIN Flashcards

1
Q
A

Circle of WILLIS

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2
Q

Subclavian Artery
Branches
🧠⚡VIT में SIT / CD⚡

A
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3
Q

Vertebral Artery
Parts

A
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4
Q

Why STELLATE GANGLION is NOT GIVEN @ C7 level?

A

Closely related to 1st PART of VERTEBRAL ARTERY

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5
Q

Which CERVICAL vertebrae does not transmit VERTEBRAL ARTERY?

A

C7

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6
Q

Through Which foramen does Vertebral Artery pass

A

Foramen Transversarium

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7
Q

In the back of NECK, Vertebral Artery is ➕ in which TRIANGLE

A

Sub-occipital Triangle

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8
Q

Vertebral Artery FUSE to form the BASILAR ARTERY at the level of

A

Ponto-Medullary Junction

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9
Q

Internal Carotid Artery

A
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10
Q

Bifurcation of COMMON CAROTID ARTERY occurs at

A

UPPER BORDER OF THYROID LAMINA Cartilage
(C4-C3)

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11
Q

Parts of INTERNAL CAROTID ARTERY
🧠⚡ CPCC⚡

A
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12
Q

CAROTID SINUS

A

Dilatation at Lower part of 1st Part of Internal Carotid ARTERY is known as CAROTID SINYS

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13
Q

CAROTID SIGMOID
🧠⚡cPCC ⚡

A

Petrous ➕ Cavernous ➕ Cerebral part of INTERNAL CAROTID ARTERY

CALLED BECUASE OF SIGMOID Course

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14
Q

Branches from CAVERNOUS Part of ICA
🧠⚡HMG ⚡

A

⭐ Hypophyseal brach
⭐ Meningeal branch
⭐ Ganglionic Branch: branch to TRIGEMINAL Ganglion

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15
Q

Branches from CEREBRAL Part of ICA
🧠⚡OPAAM⚡

A

⭐ Middle cerebral artery
⭐ Anterior Cerebral Artery
⭐ Posterior Communicating artery
⭐ Anterior Choroidal Artery
⭐ Ophthalmic artery

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16
Q

⭐ ANTERIOR communicating artery is BRANCH OF

⭐ POSTERIOR communicating artery is BRANCH OF

A

⭐ ANTERIOR communicating artery is BRANCH OF
-Anterior Cerebral Artery

⭐ POSTERIOR communicating artery is BRANCH OF
-Internal Carotid Artery

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17
Q

Largest TERMINAL BRANCH of ICA

A

Middle CEREBRAL ARTERY

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18
Q

⭐ PICA is a branch of

⭐ AICA is a branch of

A

⭐ PICA is a branch of
Vertebral Artery

⭐ AICA is a branch of
Basilar ARTERY

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19
Q

Which CEREBRAL ARTERY is NOT INVOLVED in CIRCLE OF WILLIS

A

Middle CEREBRAL ARTERY

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20
Q

Branches of BASILAR ARTERY

A
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21
Q

Middle Cerebral Artery
Segments

A

M1
M2
-M2 superior
-M2 inferior

22
Q

Branch of M1 segment

A

LENTICULOSTRIATE branch of MCA
⬇️
SUPPLIES INTERNAL CAPSULE

23
Q

Proximal MCA occlusion: Features
🧠⚡3H ⚡

A

Occlusion at M1 Segment

  1. C/L Hemiplegia
  2. C/L Hemisensory loss
  3. C/L Hemianopia (Homogenous Hemianopia)
    ➕
  4. Global Aphasia (if dominant lobe involved)
  5. Frontal eye field involvement / Horizontal Gaze Palsy
  6. Cerebral Edema
  7. Loss of Consciousness & Seizures: DUE TO: Cerebral Edema
24
Q

Sites of OCCLUSION of MCA

A
  1. Proximal MCA OCCLUSION
  2. Lenticulostriate vessels
  3. M2 OCCLUSION
  4. M2 SUPERIOR Division OCCLUSION
  5. M2 INFERIOR Division OCCLUSION
25
Q

M2 Segment OCCLUSION
🧠⚡3H ➕⚡

A
  1. C/L Hemiplegia
  2. C/L Hemisensory loss
  3. C/L Hemianopia
    ➕
    TRANS-CORTICAL APHASIA > > Conduction Aphasia
26
Q

Which Segment OCCLUSION of Middle Cerebral Artery DOES NOT CAUSES Weakness?

A

M2 INFERIOR DIVISION
Supplies TEMPORAL LOBE

27
Q

M2 SUPERIOR DIVISION OCCLUSION

A

Weakness
➕
Broca’s APHASIA
➕
Frontal Eye Field
➕
Personality Issues (Parietal Lobe)

28
Q

Features suggesting CORTICAL STROKE

A
  1. Loss of Consciousness
  2. Seizures
  3. Aphasia
    ✨ Global Aphasia
    ✨ Broca’s
    ✨ Wernicke’s
    ✨ Trans-cortical
  4. Frontal Eye Field Involvement
  5. Hemisensory loss
  6. Homonymous Hemianopia
29
Q

Face & UPPER LIMB Predominant Weakness is suggestive of

A

MCA involvement

Superolatetal surface is supplied by MCA

30
Q

Wernicke’s Aphasia ➕ No weakness ➕ Superior QUADRANTANOPIA
Suggestive of

A

M2 Inferior Division OCCLUSION

31
Q

Loss of Consciousness is DUE TO:

A

Cerebral Edema

✨ Seen in
🎯 M1 segment OCCLUSION
🎯 M2 segment OCCLUSION

32
Q

Seizure in Stroke is DUE TO:

A

Cerebral Edema

✨ Seen in
🎯 M1 segment OCCLUSION
🎯 M2 segment OCCLUSION

33
Q

Specific Lobar Findings in Cortical Stroke

A

Frontal Lobe: Personality changes
Parietal Lobe: Calculation Language, Apraxia
Angulate Gyris: GERSTMANN Syndrome

34
Q

Temporal Lobe is supplied by

A

🎯 MEDIAL
✨ Posterior Cerebral Artery

🎯 LATERAL
✨ MCA

35
Q

Auditory Loss is Not seen in TEMPORAL STROKE DUE TO: MCA OCCLUSION
Why?

A

Auditory area has B/L supply

36
Q

Lenticulo-striate vessel is a type of

A

Lacunar artery
✨ Size: 30-300mm

37
Q

Lenticulo-striate artery OCCLUSION
🧠⚡ 3H⚡

A
  1. C/L DENSE Hemiplegia
  2. Homonymous Hemianopia
  3. Hemisensory loss
  4. Facial Nerve Palsy
38
Q

How to differentiate between CORTICAL STROKE & INTERNAL CAPSULE LESION

A
39
Q

⚡Higher Mental Function NORMAL means?

⚡Higher Mental Function ABNORMAL means?

A

⚡Higher Mental Function NORMAL means?
🎯 Subcortical Lesion only

⚡Higher Mental Function ABNORMAL means?
🎯 Frontal Lobe Involvement
⬇️
M1 or M2 Segment INVOLVEMENT MUST

40
Q

DOMINANT Lobe STROKE FEATURES

A
  1. Aphasia
  2. Gerstmann Syndrome
41
Q

NON DOMINANT Lobe STROKE FEATURES

A
  1. Visuo spatial disorientation
  2. Constructional Apraxia
  3. Dressing Apraxia
  4. Hemispatial Neglect
42
Q

Anterior Cerebral Artery segments based on

A

⭐ Anterior Communicating Artery

🎯 A1: Pre Communal (Proximal to ACOM)

🎯 A2: Post Communal (Distal to ACOM)

43
Q

Which ACA OCCLUSION can’t produce STROKE

A

A1 Segment
⬇️
DUE TO: Collaterals ➕

44
Q

A1 Segment supplies

A
  1. Anterior Limb of INTERNAL CAPSULE
  2. Anterior Head of CAUDATE NUCLEUS
  3. Anterior HYPOTHALAMUS
  4. Amygdala
45
Q

A2 Segment involves:

A
  1. Frontal Pole
  2. Entire Medial Part of Frontal & Parietal Lobe
46
Q

A2 SEGMENT STROKE Features

A
  1. C/L LOWER LIMB Predominant weakness
  2. Bowel & Bladder Incontinence
  3. Gait Apraxia: Inability to Lift Foot
  4. Primitive Reflexes (suckling reflex)
  5. Cortical Sensory Loss
  6. Some Corona Radiata symptoms
47
Q

Approach to a case of HEMIPLEGIA

A
48
Q

Middle CEREBRAL artery ( MCA) supplies MAINLY WHICH LOBES of BRAIN?

A
  1. Frontal
  2. Parietal
  3. Lateral Temporal
49
Q

Posterior CEREBRAL artery (PCA) supplies MAINLY WHICH LOBES of BRAIN?

A

Medial TEMPORAL lobe
Occipital Lobe

50
Q

A1 Anterior CEREBRAL artery (ACA) supplies MAINLY WHICH parts of BRAIN?

A

Anterior Limb of Internal Capsule
Amygdala
Caudate nucleus
Hypothalamas

3 NERVOUS SYSTEM (40 decks)

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