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23 Cards in this Set
- Front
- Back
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Blood supply to brain
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anterior (carotid) & posterior (vertebral-basilar)
- both originate with blood from aorta |
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Circle of Willis
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Anterior and posterior blood supplies join at the large anastomoses to form a safety mechanism with three small communicating arteries
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4 division of internal carotid
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1. Cerivcal
2. Petrous 3. Cavernous 4. Cerebral Theses areas of distribution of the middle cerebral artery of the dominant hemisphere are the most likely to be involved in aphasia and the variety of language problems that the term encompasses |
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Sensorimotor Cortex & the motor & sensor speech centers
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supplied by the MCA
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Damage to Broca's area
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may not be able to speak & may have trouble thinking of words they are trying to say
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Damage to Wernicke's area
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may have trouble with sensory integration of hwat is heard and seen with language
- produce speech without connection to semantics |
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Cerebellum blood supply
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PICA, AICA, & SCA
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SCA in cerebellum
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Superior cerebellar artery
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AICA in cerebellum
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Anterior inferior cerebellar artery
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PICA in cerebellum
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Posterior inferior cerebellar artery
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Medulla Oblongata is supplied by
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branches of the anterior spinal artery & PICA as well as AICA
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Potentially Affected by blood supply
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Nucleus Ambiguus, Nucleus Tractus Solitarius, Vestibular and Cochlear Nuclei, & Spinal Nucleus & Tract of Trigeminal Nerve
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Nucleus' affected by blood supply may result in:
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Dysphagia, dysarthria, loss of pain/temperature sensation on ipsilateral side of face, vertigo, & ispilateral Horner Syndrome
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Dysphagia
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difficulty swallowing
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Dysarthria
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deficit in producing speech due to a neurological problem
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Nystagmus
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uncontrolled movement of the eyes
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Horner Syndrome
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won't sweat down one side of face
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Extracerebral hemmorhages
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subarachnoid, epidural, subdural
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Epidural Hematoma
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bleeding from vessels that are feeding scalp & meninges
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Subarachnoids
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are more trauma related
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Berry Aneurysms
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most common site is the junction between the anterior cerebral and anterior communicating arteries
- can get at any time in life but will have no problems unless they burst |
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Intracerebral hemorrhage
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occurs when damaged arteries bleed directly into the substance of the brain
cannot be controlled by surgical hemostasis most frequent cause is high blood pressure common sources are specific branches of the middle cerebral artery |
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Internal capsule consists of
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an anterior limb, a genu, and a posterior limb, which are traversed by specific tracts
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