Blood supply to brain 1/4 Flashcards
What are the two arteries supplying the brain
Internal carotid arteries in vertebral arteries, branches form circle of Willis
Anterior cerebral artery supplies what parts of the brain
Anterior frontal lobe
Medial surface of frontal and parietal lobe
Anterior cerebral artery expected impairments
Contralateral lower extremity motor and sensory involvement Loss of bowel and bladder control Loss of behavioral inhibition Significant mental changes Neglect Aphasia Apraxia Agraphia Perseveration Akinetic mutism with significant bilateral involvement
What is apraxia
Inability to perform skilled movement even with desire to execute
Middle cerebral artery blood supply to brain
Most of outer cerebrum Basal ganglia Posterior and anterior internal capsule Putamen Palladum Lentiform nucleus
Middle cerebral artery MCA expected possible impairments
Most common site of CVA Apraxia Contralateral weakness and sensory loss of face and upper extremity (less involvement in lower extremity) Homonymous hemianopsia Wernicke’s aphasia in dominant hemisphere Flat affect with right hemisphere damage Impaired spatial relations Impaired body schema Anosognosia in non-dominant hemisphere
What is anasognosia
Without knowledge of disease, person unaware and unable to except medical diagnosis or impairments
Posterior cerebral artery PCA blood supply to brain
Portion of midbrain Subthalamic nucleus Basal nucleus Thalamus Inferior temporal lobe Occipital and occipitoparietal cortices
Posterior cerebral artery PCA expected impairments
Contralateral pain and temperature sensory loss Contralateral hemiplegia (central area), mild hemiparesis Ataxia, athetosis, choreiform movement Quality of movement impaired Thalamic pain syndrome Anomia Prosopagnosia with occipital infarct Hemiballismus Visual agnosia Homonymous hemianopsia Memory impairment Alexia, dyslexia Cortical blindness from bilateral involvement
What is anomia
Language deficit after stroke, Inability to retrieve known words
What is prosopagnosia
Face blindness, neurological deficit unable to recognize faces
What is hemiballismus
Unilateral, rabbit, non-Redmond, flinging of arm or leg
May be considered severe form of chorea
What does vertebral basilar artery supply in brain
Lateral aspects of hands and midbrain and superior surface of cerebellum Cerebellum Medulla Pons Midbrain and thalamus Occipital cortex
What are expected impairments of vertebrobasilar artery
Loss of consciousness Hammer pleasure or tetraplegia Comatose or a vegetative state Inability to speak Locked in syndrome Vertigo Establish Dysphasia Dysarthria Syncope Ataxia
Impairments with bilateral occlusion of anterior cerebral artery
Paraplegia Incontinence Abulic aphasia Personality changes Potential akinetic mutism, conscious unresponsiveness
