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Flashcards in Circulation of the CNS Deck (16)
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1
Q

how much of cardiac output goes to the brain?

A

10-20%

2
Q

perfusion to the brain remain unchanged between blood pressure ranging from

A

80-140 mmHg

3
Q

more blood vessels are found in

A

Grey matter

4
Q

Formed by 2 systems

A

Vertebral Arteries

Internal Carotid Arteries

5
Q

where do vertebral arteries come from?

A

subclavian

6
Q

where do vertebral and carotid arteries come from

A

foramen magnum

carotid cannal

7
Q

ACA supplies

A

the corpus callosum
medial aspect of frontal, temporal lobe, parietal
sensory and motor cortex to lower limb and trunk

8
Q

MCA

A

supplies lateral surface of frontal, temporal, insular, parietal, occipital
over lateral fissure
supplies areas (most sensory and motor of the body, broca’s and wernicke’s)

9
Q

PCA

A

medial inferior surfaces of temporal and occipital lobes
area (visual cortex) and dorsal surface of parietal and occipital and temporal
is the terminal branch of the basilar artery
DAMAGE (contralateral homonimus hemianopia)

10
Q

what are the 4 groups of perforating arteries

A

posterior (midbrain, thalamus and hypothalamus)
pontine (pons from basilar)
leteral-lenticulostriate (from MCA, basal ganglia and internal capsule)
anterior (optic chiasm and anterior hypothalamus)

11
Q

important arteries from the ICA in the brain?

A
Opthalmic Arteries (eye, retina, top of nasal cavity)
Anterior Choroidal Artery (optic tracts, lateral ventricles, hyppocampus)
12
Q

In order what are the rami of the cerebellar arteries?

A
Superior Cerebellar Artery
Pontine branches (straight from basilar)
Anterior Inferior Cerebellar Artery
Posterior Inferior Cerebellar Artery
Vertebral Artery
Anterior Spinal Artery
Posterior Spinal Arteries
13
Q

What does the Superior Cerebellar Artery supply with the PCA

A

SCA: midbrain level of the colliculi (dorsally)
PCA: anteriorly

14
Q

What does the Postero Inferior Cerebellar Artery supply

A

the dorsal part of the ventral

15
Q

What does the Anterior Spinal Artery supply

A

from 6-8 of the dorsal part of the medulla (hypoglossal nucleus, pyramid and medial lemniscus)

16
Q

What is the anterior medullary symptom?

A

damage to the medulla to the area supplied by the anterior spinal artery
ipsilateral tongue paralysis
contralateral sensory and motor loss