factori ce influenteaza presiune sgv Flashcards

1
Q

influenta volemiei

A

creste volemia –> creste presiunea; sarea atrage apa –> creste volumul sgv

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2
Q

influenta elasticitatii vaselor

A

scaderea elasticitatii –> cresterea pres. art

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3
Q

ce produce acumularea de grasimi?

A

ateroscleroza ce scade elasticitatea arterelor provocand hipertensiune –> infarct miocardic

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4
Q

ce este debitul cardiac?

A

cant. de sange pompata de inima intr-un minut

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5
Q

ce este rezistenta periferica

A

totalitatea factorilor ce se opun curgerii sangelui printr-un vas

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6
Q

unde este mai mare rezistenta periferica?

A

in arteriole si la niv lor, cu cat rezistenta este mai mare, cu atat presiune va fi mai mare

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7
Q

calibrul aortei =

A

suprafata de sectiune

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8
Q

suprafata totala de sectiune

A

suma tuturor suprafetelor de sectiune ale vaselor dintr-un teritoriu

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9
Q

cum variaza presiunea?

A

de la periferie spre inima presiunea scade si VOLUMUL DE CURGERE
creste, de la inima la periferie p si V scad

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10
Q

influenta vascozitatii sangelui

A

duce la cresterea rezistentei periferice –> creste pres

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