hjärnans blodförsörjning Flashcards

1
Q

grenar från ICA

A

a. ophtlamica
a. communicans post
a. choroidea ant (plexus choroideus, capsula int)

ACA, MCA

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2
Q

anastomoser ICA ECA

A

a. fascialis och temporalis superficialis kan gå till

a. ophtalmica

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3
Q

vilka grenar kommer från vertebralis

A

PICA

spinalis ant

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4
Q

vilka grenar kommer från basilaris

A

SCA

AICA

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5
Q

symtom PICA

A

STÄMBAND och svalg
yrsel, balans
interoception (smärta, temp) bortfall ipislateralt ansikte (nucleus tractus spinalis) och kontralaterala kroppen (lat. tractus spinothalamicus)

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6
Q

aktuella kärnor som drabbas vid PICA

A

V, VIII, IX, X, XII

tracus spinothalamicus

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7
Q

ACA

A

rider corpus callosum
capusla interna, BG (putamen, NC)
a. striate mediale

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8
Q

MCA

A

80% av hemisfären
fissura sylvii
SI, MI, CI, BG
a. lenticulostriate lateralis

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9
Q

PCA

A

occipital, temporalt, BG, thalamus

a. thalamogeniculate
a. thalamoperforating
a. choroidea post

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10
Q

hur regleras blodflödet

A
  1. regleras utefter energibehov - match
    - pH, K/adenosin, mediatorer, NO, autonoma ganglia
  2. autoreglering
    - myogen kontroll
    - metabol kontroll
    - neurogen kontroll
    - endotel - VD/VC
  3. vaskulär reaktivitet - ff.a. beroende av CO2
  4. neurogen reglering
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