C1 Fysiologi Flashcards

1
Q

Homeostase:

A

Betyder balance. Processen er at opretholde konstant indre miljø (f.eks. kropstemperatur). Kræver energi. “Er kontrollen af vitale parametre”

Eksempler på vitale parametre i kroppen:
Kropstemperatur
pH
Volumen
Ilt
Salte
næringsstoffer

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2
Q

Redundans:

A

Betyder overflødighed. Hvis ét system skulle svigte, så er der andre til at opretholde homeostase. Jo mere vital enn funktion er, jo mere redundans. Kræver energi og er derfor IKKE en ligevægt

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3
Q

Hvordan deler vi kroppen op i Fysiologi?

A

I Compartments “Rum” - Intracellular og extracellulær. Det er cellemembranen der er ansvarlig for denne adskillelse

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4
Q

Hvilket kompartment har det største volumen?

A

Det Intracellulære

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5
Q

Beskriv homeostase:

A

Det er at opretholde et nærmest konstant indre miljø

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6
Q

Forklar cellemembranen:

A

Cellemembranen består af lipiddobbeltlag med integrerede membran proteiner som transportkanaler

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7
Q

Transportformer (transport af stoffer over cellemembranen)

A

Kan være passiv eller aktiv. Passiv transport koster ikke energi - stoffet transporteres med sin gradient.
Aktiv transport koster energi i form af AT - stoffer transporteres mod sin gradient.

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8
Q

Passiv transport: simpel diffusion:

A
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9
Q

Gradient

A

Forskel i parameter

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10
Q

Influx

A

Stoffer transporteres ind i celle

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11
Q

Efflux

A

Stoffer transporteres ud af cellen

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12
Q

elektrokemiske gradient

A

Den drivende kraft, der bestemmer den passive transport af stof over membranen

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13
Q

[X]o

A

Koncentrationsforskellen af X extracellulært

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14
Q

[X]i

A

Koncentration af X intracellulært

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15
Q
A
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