Cranial Circulation Flashcards
what is ataxia?
trouble walking (cerebellum affected) coordination off
what drains blood from the brain to the body?
dural sinuses.
cavernous sinus is innervated by what?
CN 3,4 and 6
Huge arterial supply. brain vessels act like a what?
radiator
main arterial supply is found where?
at the base of the brain.
internal carotid artery is where?
anterior brain
vertebral artery is where?
posterior brain
what parts meet at the circle of willis?
anterior and posterior brain
what is hypoxia?
20-30 seconds unconsciousness
what is ischemic infarct?
3-4 minutes lack of blood tissue damage due to lack of oxygen
arterial dilemination
clots form in aorta, carotids, vertebrals
Brain gets its energy from what? Does it have stored energy?
glucose. No stored energy.
ischemia–> infarct—> neucrosis (death) brain cell death
T or F
True
There are white blood cells in the brain. True or False.
False
PICA stands for what? Are blood clots common here?
posterior inferior carotid artery and yes blood clots common here.
what are the symptoms of vertebral dissection?
Effects cerebellum….ataxia= have trouble walking, visual problem (diplopia). Can get better without surgery.
thrombosis in cavernous sinus will affect what?
EOMs and carotid artery.
for alsheimer disease what is the first thing to go?
taste and smell.
common place for blood clots is?
PICA
vertebral =posterior blood supply T or F
True
cerebella artery= cerebellum T or F
True
anterior communicating runs into what?
longitudinal fissure
internal carotid becomes middle cerebral which runs into what?
lateral fissure
Internal carotid arteries
- Anterior cerebral arteries
- Middle cerebral arteries
which circulation is this?
anterior circulation
- Vertebral arteries
- Basilar artery
- Posterior cerebral arteries
- Cerebellar arteries
which circulation is this?
posterior circulation
how big is the circle of willis?
1mm diameter
Circle of willis equalizes blood pressure in the brain but wont save you from a stroke. T or F
True.
stroke in posterior cerebral artery whats the symptoms?
ataxia and vision effected
middle cerebral stroke what is effected? is this the most common stroke type?
yes the most common and SPEECH is effected.
loss of feeling and all other frontal lobe stuff.
if anterior stroke what is effected?
LEGS MOTOR AND SENSORY loss from hips down
if you knock out central part of the brain, what happens to the body?
one side of the body goes out.
how long does it take to know how bad a stroke was?
3 months
what type of stroke is rare but has great recovery?
hemi-stroke
what is a TIA?
Trans- Ischemic Attack
what is classified as a "warning"? Temporary ischemia in cerebral artery Loss of function of the affected area Pre-stroke Embolism (something that blocks blood supply ie. Air, blot clot, fat, Stroke), vasospasm where blood vessels usually constrict or contract (cause heart attack) Usually treated with blood thinners More focal
TIA
focal means what?
blackout in one eye but then it comes back.
what disease can cause one to lose vision in one eye?
multiple sclerosis
“temporary heart attack”
angina
Cerebral blood vessel rupture
Aneurism (bulge in artery wall, bubble) will burst
Subarachnoid or parenchymal
Anticoagulants (not used for hemoratcic stroke) increase risk
HTN (hypertension) increases risk
Something burst, your bleeding out
what type of stroke am I?
hemmorrhagic stroke
what is a stroke?
aneurism burst
what is an aneurism?
bulge of blood in artery
Blockage in cerebral arteries
Emboli: clots, fat, air (ischemia)
TIA: Transischemic Attack (temporary blockage)
DVT: Deep Vein Thromboses
tPA: Tissue plasminogen activator
Thrombolytic (clot buster)
what type of stroke am I?occlusive stroke
what is DVT?
Deep Vein Thrombosis. Blood in your knees slows down when sitting.
what is a TIA?
Transischemic attack which is a temporary blockage.
what is a tPA?
Tissue plasminogen activator
Thrombolytic (clot buster)
