Study sets matching "cerebral blood flow"
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At what level do the vertebral arteries…
where does the anterior cerebral artery…
what are the branches of the internal c…
what supplies the posterior cerebral ar…
The junction between the... pons and the medulla
longitudinal fissure at the rostral part of the brain
-anterior cerebral artery... -middle cerebral artery... -posterior c…
vertebral arteries
At what level do the vertebral arteries…
The junction between the... pons and the medulla
where does the anterior cerebral artery…
longitudinal fissure at the rostral part of the brain
What three longitudinal vessels run the…
What does the anterior spinal artery su…
What do both of the spinal artery vesse…
Where are the radicular arteries locate…
Anterior spinal artery (single), posterior spinal artery (pair…
The anterior two-thirds of the spinal cord
The vertebral artery
Derived from aorta; pass through intervertebral foramina; conn…
What three longitudinal vessels run the…
Anterior spinal artery (single), posterior spinal artery (pair…
What does the anterior spinal artery su…
The anterior two-thirds of the spinal cord
How does blood travel from the heart to…
How does blood travel from the heart to…
How does blood travel from the heart to…
How does blood flow from the heart to t…
Heart-aorta-brachiocephalic trunk-vertebral artery-basilar art…
Heart-aorta-brachiocephalic trunk-vertebral artery-basilar art…
Heart-aorta-brachiocephalic trunk-R common carotid-internal ca…
Heart-aorta-brachiocephalic trunk-R common carotid-external ca…
How does blood travel from the heart to…
Heart-aorta-brachiocephalic trunk-vertebral artery-basilar art…
How does blood travel from the heart to…
Heart-aorta-brachiocephalic trunk-vertebral artery-basilar art…
Normal cerebral blood flow in adults is…
cerebral blood flow is high related to…
What are the 4 metabolic factors that h…
Increased CO2 or H+ concentration resul…
15
metabolism
1. CO2 concentration... 2. Hydrogen ion concentration... 3. O2 conce…
increased
Normal cerebral blood flow in adults is…
15
cerebral blood flow is high related to…
metabolism
what can provide immediate compensation…
the arterial system to brain: ... anterio…
venous system of brain consists of ___…
extradural bleeds: which artery or vein…
venous blood in cerebral vessels; ... CSF
anterior: ... ICAx2=2 middle cerebral a, 2Ant cerebral a, 2 A& P…
superficial and deep
ant. cranial fossa: ant ethmoidal a. ... middle cranial fossa: m…
what can provide immediate compensation…
venous blood in cerebral vessels; ... CSF
the arterial system to brain: ... anterio…
anterior: ... ICAx2=2 middle cerebral a, 2Ant cerebral a, 2 A& P…
-2 Internal caratoid Arteries (Anterior…
-Opthalamic artery... -Choroidal artery... -A…
-Anterior spinal artery ... -Posterior spi…
At the base of the pons the vertebral a…
Brain is supplied by what blood vessels
Internal Carotid Branches
Vertebral Artery Branches
Basilar Artery Branches
-2 Internal caratoid Arteries (Anterior…
Brain is supplied by what blood vessels
-Opthalamic artery... -Choroidal artery... -A…
Internal Carotid Branches
How much CO does the brain receive? How…
What is higher arterial or intracranial…
what do the anterior and posterior circ…
what is the blood supply of the cerebel…
• Receives 15% cardiac output , 7.5 times metabolism/unit mass…
• Systemic arterial pressure > intracranial pressure... • Brain i…
Anterior circulation ... • 80% of blood supply ... • Derived from in…
Supplied by: ... - Branches from the basilar artery:... • Superior c…
How much CO does the brain receive? How…
• Receives 15% cardiac output , 7.5 times metabolism/unit mass…
What is higher arterial or intracranial…
• Systemic arterial pressure > intracranial pressure... • Brain i…
Arteries
Veins
Blood Flow from the Heart to the Brain…
Blood Flow from the Heart to the Brain…
Deliver oxygen and nutrient-rich blood to body; arteries --->…
Carry deoxygenated, waste-laden blood from body back to heart…
Anterior blood supply to the brain originates from left and ri…
Posterior blood supply to the brain originates from the left a…
Arteries
Deliver oxygen and nutrient-rich blood to body; arteries --->…
Veins
Carry deoxygenated, waste-laden blood from body back to heart…
Pontine-medullary junction
Anterior cerebral artery
Middle cerebral artery
Posterior cerebral artery
Vertebral arteries join to form basilar arteries here
Runs in longitudinal fissure , supplies medial surfaces of bra…
Runs up between temporal lobes , supplies lateral parts of cor…
Runs backwards, extends around lateral occiputal lobe, supplie…
Pontine-medullary junction
Vertebral arteries join to form basilar arteries here
Anterior cerebral artery
Runs in longitudinal fissure , supplies medial surfaces of bra…
Internal Carotid
Opthalamic (Off of internal carotid)
Posterior communicating
Anterior choroidal (Off of internal car…
May be asymptomatic ... Contralateral hemiplegia ... Contralateral…
Visual symptoms
...
Regions: Lateral geniculate body, internal capsule, basal gang…
Internal Carotid
May be asymptomatic ... Contralateral hemiplegia ... Contralateral…
Opthalamic (Off of internal carotid)
Visual symptoms
common carotid
carotid canal
anterior communicating artery
optic canal
internal carotid arises from the
the internal carotid artery enters the cranial cavity through…
where do intracranial aneurysms occur?
the ophthalmic artery is a branch of ICA that enters through t…
common carotid
internal carotid arises from the
carotid canal
the internal carotid artery enters the cranial cavity through…
Pial arteries
2 types of small arteries that branch f…
Neurovascular unit - fx of components
Unique features of brain capillary endo…
On the surface of the brain w/in the pia-arachnoid space (lept…
Intracerebral and capillaries
Capillary... Pericyte (around capillary endothelial cell): gives…
Continuous tight junctions... Absence of pores or transport vesic…
Pial arteries
On the surface of the brain w/in the pia-arachnoid space (lept…
2 types of small arteries that branch f…
Intracerebral and capillaries
ICA Divisions
ICA intracranial
ACA areas
PCA areas
Cervical, petrous (into temporal lobe), cavernous (through cav…
Ophthalmic, Pcomm, ACA, MCA, anterior choroidal
Medial cortex surface of frontal and anterior parietal lobe.
From basilar artery. Medial side of inferior and medial tempor…
ICA Divisions
Cervical, petrous (into temporal lobe), cavernous (through cav…
ICA intracranial
Ophthalmic, Pcomm, ACA, MCA, anterior choroidal
Internal coritid arteries
Middle Cerebral Arteries
lesion of middle cerebral artery s/s
Anterior cerebral artery
major artery supply for cortex, enters at optic chiasm, impair…
arises from internal carotids supplies LATERAL SURFACE OF THE…
contralateral hemiplegia, (arm, face, tounge) contralateral he…
arises from internal carotids, supply superior, lateral and me…
Internal coritid arteries
major artery supply for cortex, enters at optic chiasm, impair…
Middle Cerebral Arteries
arises from internal carotids supplies LATERAL SURFACE OF THE…
metabolic factors that regulate cerebra…
correlation between cerebral blood flow…
importance of cerebral blood flow contr…
oxygen deficiency
1. CO2 concentration... 2. H-ion concentration... 3. O2 concentratio…
- CO2 + H2O-->carbonic acid, dissociates releasing H-ions... - ex…
- increased H-ion conc depresses neuronal activity... - increase…
O2 utilization by cerebral tissues is around 3.5 mL/100g of ti…
metabolic factors that regulate cerebra…
1. CO2 concentration... 2. H-ion concentration... 3. O2 concentratio…
correlation between cerebral blood flow…
- CO2 + H2O-->carbonic acid, dissociates releasing H-ions... - ex…
carotids, anterior cerebral artery, mid…
vertebrals/basilar, posterior cerebral…
superior cerebellar arteries
middle cerebral junction
anterior circulation
posterior circulation
Posterior... -basilar branches off into the ____ ____ _____
Anterior... -anterior cerebral branches to ___ ____ ____
carotids, anterior cerebral artery, mid…
anterior circulation
vertebrals/basilar, posterior cerebral…
posterior circulation
cranial vault
CSF
extravascular compression
subtract
The __ - rigid structure with a fixed total volume:... brain (80%…
↑ in 1 must be offset by an equivalent ↓ in another to prevent…
↑ in ICP - __
if we go above the heart, you __ pressure due to gravity ... pre…
cranial vault
The __ - rigid structure with a fixed total volume:... brain (80%…
CSF
↑ in 1 must be offset by an equivalent ↓ in another to prevent…
What are the signs and sx of internal c…
What are the signs and sx of ophthalmic…
What are the signs and sx of anterior c…
What are the signs and sx of anterior c…
1. Contralateral hemiplegia... 2. Contralateral hemisensory defic…
visual sxs
1. Contralateral hemianopsia**... 2. Contralateral hemiparesis**…
1 . Contralateral hemiplegia ... 2. Contralateral hemisensory los…
What are the signs and sx of internal c…
1. Contralateral hemiplegia... 2. Contralateral hemisensory defic…
What are the signs and sx of ophthalmic…
visual sxs
Highly permeable
Slightly permeable
Impermeable
Tight junctions... Basement membrane... Podoc…
Permeability of BBB to water, CO2, O2, and most lipid-soluble…
Permeability of BBB to electrolytes (Na, K, Cl)
Permeability of BBB to proteins & other polar substances
4 components of BBB
Highly permeable
Permeability of BBB to water, CO2, O2, and most lipid-soluble…
Slightly permeable
Permeability of BBB to electrolytes (Na, K, Cl)
15-20%
F = P/R
A. a pressure gradient (P) between cere…
circulatory reflexes
The brain comprises only 2% of body weight yet receives __ __…
Ohm's law is
Cerebral blood flow (F) is a function of:
Pressure is regulated by__ __ (e.g., the baroreceptor reflex,…
15-20%
The brain comprises only 2% of body weight yet receives __ __…
F = P/R
Ohm's law is
the anterior circulation of the brain:…
the posterior circulation of the brain:…
the circle of willis is the __ __ circle
the circle of willis is important __ bt…
internal carotid; anterior cerebral artery(ACA); anterior comm…
vertebral artery; basilar; posterior cerebral; posterior commu…
central arterial
anastomosis; 2; 2
the anterior circulation of the brain:…
internal carotid; anterior cerebral artery(ACA); anterior comm…
the posterior circulation of the brain:…
vertebral artery; basilar; posterior cerebral; posterior commu…
Anterior blood supply
Posterior blood supply
Circle of Willis
Pleural linkage
left and right carotid arteries --> internal carotid... 1. Anteri…
left and right subclavian arteries --> vertebral arteries -->…
convergence of internal carotid and vertebral arteries at the…
surface tension between the wet pleural linings draw the lungs…
Anterior blood supply
left and right carotid arteries --> internal carotid... 1. Anteri…
Posterior blood supply
left and right subclavian arteries --> vertebral arteries -->…