Proprietarile Miocardului Flashcards

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1
Q

Excitabilitatea=?

A

Proprietatea miocardului de a raspunde la stimul

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2
Q

Automatismul=?

A

Proprietatea miocardului de a se contracta ritmic datorita impulsurilor generate de tesutul nodal sau extraconducator

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3
Q

Conductabilitatea=?

A

Proprietatea miocardului de a conduce unda de contractie de unde e generata in tot miocardul

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4
Q

Contractibilitatea=?

A

Proprietatea miocardului de a se contracta atunci cand e stimulat

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5
Q

Ce e miocardul?

A

Muschiul inimii care pompeaza sangele in organism si trece prin doua stari

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6
Q

Starile miocardului

A

-contractie=(SISTOLA)
-relaxare=(DIASTOLA)

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7
Q

Ciclul cardiac

A

O sistola+ o diastola=0,8 sec

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8
Q

Frecventa cardiaca(FC)

A

70 batai pe min (repaus)

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9
Q

Ce e volumul sistolic?

A

Cantitatea de sange pompata intr-o sistola (70 ml sange min.)

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10
Q

Debitul cardiac (Dc)

A

Dc=Frecventa cardiaca×Volumul Sistolic/min=70x70 ml sange/min

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11
Q

Prin ce se inregistreaza activitatea electrica a inimii?

A

Se inregistreaza prin electrocardograma

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12
Q

Ce e tensiunea arteriala?De ce tipuri e?

A

Presiunea sub care circula sangele in artere
E de 2 tipuri:
1.Tensiunea arteriara maxima (sistolica)—120-140 mm Hg
2.Tensiunea arteriala mica(diastolica)—70-80 mm Hg

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