Sistemul respirator Flashcards

1
Q

Inspiratia

A

proces activ, marirea volumui cutiei toracice si a plamanilor, presiunea intrapulmonara scade

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2
Q

Expiratia

A

proces pasiv, musculatura respiratorie se relaxeaza, cutia toracica si plamanii revin la volumul initial, presiunea intrapulmonara creste

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3
Q

Volume si capacitati respiratorii

A

VC, VIR, VER, VR
CV = VC + VIR + VER
CPT = CV + VR
Debitul ventilator de repaus = VC * frecv. resp.

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4
Q

Schimburile de gaze repiratorii

A

Etapa pulmonara: O trece din aerul alveolar in sangele capilar si CO trece din sangele capilar in aerul alveolar

Etapa sangvina: -O-dizolvat in plasma sangvina, oxihemoglobina
-CO-dizolvat in plasma sangvina, carbaminohemoglobina, sub forma de bicarbonati de sodiu si potasiu

Etapa tisulara: O trece din capilarele sangvine in lichidul interstitial si CO din lichidul interstitial in sangele capilar

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5
Q

Boli ale sistemului respirator

A

Emfizem pulmonar - unele profesii, boli cronice - tuse, cianoza, torace cu aspect globulos
Fibroza pulmonara - iradierea terapeutica pt. tumori maligne - sclerozarea tesutului pulmonar, insuficienta respiratorie si cardiaca

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