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Patho chap 33
Cerebrovascular disorders
| Question | Answer |
|---|---|
| who is most likely to get a stroke? | people over 65 |
| how common is strokes? | 5th leading cause of death |
| what population or ethnicity is more likely to have a stroke? | african americans |
| CNS | brain and spinal cord |
| PNS | cranial and spinal nerves |
| corticospinal tract | the major neural pathway providing voluntary motor function and connects the cortex (brain) to the spinal cord |
| corticobulbar tract | runs parallel to the CST and carries upper motor neurons form the cortex down into the brainstem and the cranial nerves |
| spinothalmic tract | travels from peripheral nerves up toward the brain |
| how many hemispheres is the cerebrum divided into ? | two |
| the anterior circulation gets its blood supply from | carotid arteries |
| posterior circulation begins with | vertebral arteries that join into one artery called the basal artery |
| circle of willis | traffic circle of arteries |
| vertebrobasilar circulatory disorders | when we don't get enough blood supply to the brainstem or posterior blood supply |
| CN I | olfactory - smell |
| CN II | optic - vision |
| CN III | oculomotor - eye movement and pupil reflex |
| CN IV | trochlear - eye movement |
| CN X | trigeminal - face sensation & chewing |
| CN VI | abducens - eye movement |
| CN VII | facial - face movement and taste |
| CN VIII | vestibulocochlear - hearing and balance |
| CN IX | glossopharynyngeal - throat sensation, taste and swallowing |
| CN X | vagus - movement, sensation & abdominal organs |
| CN XI | spinal accessory - neck movement |
| CN XII | movement, sensation & abdominal organs |
| frontal lobe | emotion and self control |
| parietal lobe | body awareness |
| temporal lobe | sensory |
| occipital lobe | vision |
| cerebellum | balance and coordination |
| broca areas | region of the brain that contains neuron involved in speech function |
| aphasia | loss of speech |
| receptive aphasia | when we can't understand language |
| what are some unusual risk factors for ischemic stroke | lipohyalinosis |
| small vessel strokes are known as | lacunar stroke |
| what are the two common causes of large vessel strokes? | carotid artery stenosis or atrial fibrillation |
| screening for vessel strokes what is the best diagnosis tool | MRI |
| what is transient ischemic attack? | unstable angina |
| does transient ischemic attack show up on an MRI | no |
| why is it important to be evaluated after having a TIA | severe risk of having a stroke |
| the gold standard for imaging strokes is | diffusion weighted imaging from an CT |
| why is a CT a great fast screening tool for stroke symptoms | great for showing blood |
| what are the presenting symptoms of a hemorrhagic strokes | worst headache of your life, weak on the left side |
| what does an imaging study called an angiogram show? | can see the cerebral blood vessels |
| what kinds of deficits do right hemispheric strokes have | Balance Eyes Face Arm Speech Time |
| what does the NiHSS scale test for | looking for brain stem or stroke stuff |
| anoxic encephalopathy | not enough blood flow or oxygen to the brain ; delirium |
| decussation | when tracts cross over in the brain |
Created by:
sammy.e7
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