Neuro3 Neurology Circulatory Flashcards Preview

Neurology > Neuro3 Neurology Circulatory > Flashcards

Flashcards in Neuro3 Neurology Circulatory Deck (5)
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1
Q

Watershed zones

A

Between anterior cerebral/middle cerebral, posterior cerebral/middle cerebral arteries. Damage in severe hypotension : upper leg/upper arm weakness, defects in higher-order visual processing.

2
Q

Regulation of cerebral

perfusion

A

Normally driven by Pco2, but also by Po2 with
severe hypoxia.

Therapeutic hyperventilation (decreases Pco2) helps decrease ICP in cases of acute cerebral edema (stroke, trauma).

3
Q

Circle of Willis Anterior cirulation

A

derived from internal carotid: ACA, lateral striate, MCA.

4
Q

Circle of Willis Posterior circulation

A

derived from subclavian: AICA, ASA, basilar, PICA, PCA, vertebral

5
Q

Dural venous sinuses

A

Venous sinuses run in the dura mater where its meningeal and periosteal layers separate. Cerebral
veins : 7 venous sinuses : 7 internal jugular vein.