sirdies sandara Flashcards

1
Q

kas yra sirdis

A

organas, sudarytas is sirdies skersaruozio raumens

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2
Q

kuo padengta sirdis

A

sirdipleve/perikardu

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3
Q

kokia sirdipleves funkcija

A

isskiria serozini skysti, kuris mazina trinti

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4
Q

pertvaros funkcija

A

atskiria arterini krauja nuo veninio, neleidzia susimaisyti

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5
Q

buriniai voztuvai

A

neleidzia kraujui grizti atgal i priesirdzius is skilveliu

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6
Q

pusmenuliniai voztuvai

A

neleidzia kraujui teketi is arteriju i skilvelius

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7
Q

kodel kairiojo skilvelio sienele stora

A

nes kraujas isstumiamas i aortos lanka ir teka didziuoju apytakos ratu.

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8
Q

vainikines arterijos

A

kraujagysles, kurios israizgo miokardą, maitina sirdi deguonimi ir maisto medziagomis

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9
Q

is kur kraujas teka i desiniji priesirdi

A

virsutine tusciaja ir apatine tusciaja venomis

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10
Q

kiek trunka sirdies darbo ciklas

A

0,8s

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11
Q

kiek trunka diastole

A

0,4s

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12
Q

kiek trunka ir kokia sistole

A

priesirdziu 0,1s, skilveliu 0,3s

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13
Q

kiek per minute mzdg susitraukia sirdis

A

70 kartu

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14
Q

kada dazniau susitraukia

A

karsciuojant, susijaudinus

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15
Q

kuo klausomas sirdies darbas

A

stetoskopu

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16
Q

kas yra kardiogramoje P, Q, R, S, T

A

P - jaudinimo impulsas, Q,R,S impulso plitimas per skilvelius, T mažėjantis širdies susijaudinimas

17
Q

kas yra sinusinis priesirdzio mazgas ir kur

A

sirdies ritmo vedlys. del jo impulso vyksta priesirdziu sistole. yra virsutinėje tusciojoje venoje

18
Q

priesirdinis skilvelio mazgas

A

del ju vyksta skilveliu sistole.

19
Q

infarktas

A

uzsikemsa vainikines krujagysles, nes sirdis neaprupinama o2, negali pasigaminti ATP