Blood Supply - Revision Flashcards
Anterior circulation to the plain is supplied by = ?
Blood Supply
Anterior circulation to the plain is supplied by internal carotid artery.
- Branch of common carotid artery
Posterior circulation to the brain is supplied by = ?
Blood Supply
Posterior circulation to the brain is supplied by vertebral artery.
- Branch of Subclavian artery
Circle of Willis
A connected ring of arteries that supply blood to various areas of the = ?
Blood Supply
Circle of Willis:
- A connected ring of arteries that supply blood to various areas of the cerebral hemispheres.
Cerebral Arteries
Anterior cerebral artery supplies = ?
Blood Supply
Cerebral Arteries:
- Anterior cerebral artery supplies:
- Medial frontal and parietal lobes
- Anterior caudate
- Putamen
- Anterior limb of the internal capsule
Cerebral Arteries
Middle cerebral artery supplies = ?
Blood Supply
Cerebral Arteries:
- Middle cerebral artery supplies:
- Parts of the basal ganglia such as the Globus pallidus, putamen, and body of caudate
- Most of the lateral hemisphere
- Genu of the internal capsule
Cerebral Arteries
Posterior cerebral artery supplies = ?
Blood Supply
Cerebral Arteries:
- Posterior cerebral artery supplies:
- Midbrain
- Occipital lobe
- Inferomedial temporal lobe
- Most of the thalamus
Cerebral Arteries
Which artery supplies…
- Medial frontal and parietal lobes
- Anterior caudate
- Putamen
- Anterior limb of the internal capsule
Blood Supply
Cerebral Arteries:
- Anterior cerebral artery supplies:
- Medial frontal and parietal lobes
- Anterior caudate
- Putamen
- Anterior limb of the internal capsule
Cerebral Arteries
Which artery supplies…
- Globus pallidus, putamen, and body of caudate
- Most of the lateral hemisphere
- Genu of the internal capsule
Blood Supply
Cerebral Arteries:
- Middle cerebral artery supplies:
- Parts of the basal ganglia such as the Globus pallidus, putamen, and body of caudate
- Most of the lateral hemisphere
- Genu of the internal capsule
Cerebral Arteries
Which artery supplies…
- Midbrain
- Occipital lobe
- Inferomedial temporal lobe
- Most of the thalamus
Blood Supply
Cerebral Arteries:
- Posterior cerebral artery supplies:
- Midbrain
- Occipital lobe
- Inferomedial temporal lobe
- Most of the thalamus
Occlusion of the anterior cerebral artery, results in = ?
Blood Supply
Occlusion - Anterior Cerebral Artery:
- Personality changes
- Contralateral hemiplegia
- Hemisensory loss
(More severe in the lower limbs)
Occlusion of the middle cerebral artery, results in = ?
Blood Supply
Occlusion - Middle Cerebral Artery:
- Homonymous hemianopia with contralateral hemiplegia and hemisensory loss.
- Effects the upper limbs and face.
- Language impacted in L-hemisphere.
- Nonverbal communication impacted in R-hemisphere.
Occlusion of the posterior cerebral artery, results in = ?
Blood Supply
Occlusion - Posterior Cerebral Artery:
- Paralysis of eye movement muscles and visual agnosia.
- Cortical blindness and thalamic syndrome.
Anterior Cerebral Artery
Somatosensory = ?
Blood Supply
- Anterior Cerebral Artery:
Somatosensory = Loss of sensation in lower limb
Anterior Cerebral Artery
Motor = ?
- Anterior Cerebral Artery:
- Motor = Aparaxia; hemiaplegia (lower limb more affected than upper limb and face); impaire gait
Anterior Cerebral Artery
Special Senses and Autonomic Function = ?
- Anterior Cerebral Artery:
- Special Senses and Autonomic Function = No changes
Anterior Cerebral Artery
Emotions and Behavior = ?
- Anterior Cerebral Artery:
- Emotions and Behavior = Flat affect; umpulsiveness; perseveration; confusion; motor inactivity.
Anterior Cerebral Artery
Cognition, Language, Memory = ?
- Anterior Cerebral Artery:
- Cognition, Language, Memory = Difficulty with divergent thinking.
Anterior Cerebral Artery
Other = ?
- Anterior Cerebral Artery:
- Other = Urinary incontinence
Middle Cerebral Artery
Somatosensory = ?
Blood Supply
- Middle Cerebral Artery:
Somatosensory = Hemiaanesthesia affecting face and upper limb.
Middle Cerebral Artery
Motor = ?
- Middle Cerebral Artery:
Motor = Face and uppe rlimb more impaired than lower limb; if striate arteries involved lower limb paresis or paralysis in addition to face and upper limb.
Middle Cerebral Artery
Special Senses and Autonomic Function = ?
- Middle Cerebral Artery:
Special Senses and Autonomic Function = Homonymous hemianopia
Middle Cerebral Artery
Emotions and Behavior = ?
- Middle Cerebral Artery:
Emotions and Behavior = IF R-hemisphere (left hemiplegia): easily distracted, poor judgement, impulsiveness. If L-hemisphere (right hemiplegia): apraxia, compulsiveness overally cautious.
Middle Cerebral Artery
Cognition, Language, Memory = ?
- Middle Cerebral Artery:
Cognition, Language, Memory = L-MCA; aphasia, R-MCA: difficulty understanding spatial relationships, neglect, impairment of nonverbal comunication, dressing apraxia, constructional apraxia.
Middle Cerebral Artery
Other = ?
- Middle Cerebral Artery:
- Other = None
Posterior Cerebral Artery
Somatosensory = ?
Posterior Cerebral Artery
Motor = ?
- Posterior Cerebral Artery:
Motor = If lesion enar origin of artery; vertical gaze palsy, oculomotor nerve palsy, loss of medial deviation of the eyes with perserved convergence, vertical skew deviation of the eyes; rarely hemiparesis.
Posterior Cerebral Artery
Special Senses and Autonomic Function = ?
Blood Supply
- Posterior Cerebral Artery- Special Senses and Autonomic Function:
- Homonymous hemianopia
- Cortical blindness
- Hallucinations
- Lack of depth perception
- Impaired eye movements, except lateral and infero-medial eye movements
- Visual agnosia
- Limbs may show vasomotor and/or trophic abnormalities.
Posterior Cerebral Artery
Emotions and Behavior = ?
Blood Supply
- Posterior Cerebral Artery:
Emotions and Behavior = Memory loss
Posterior Cerebral Artery
Cognition, Language, Memory = ?
Blood Supply
- Posterior Cerebral Artery:
Cognition, Language, Memory = Difficulty reading.
Posterior Cerebral Artery
Other = ?
Blood Supply
- Posterior Cerebral Artery:
Other = None
