November 23rd Flashcards Preview

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Flashcards in November 23rd Deck (9)
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1

symbols for gas pressure

P = partial pressure
S
A
a = arterial blood
v = mixed venous blood
O2
CO2
other gases use chemical equation

2

why is c02 so high in the alveoli

goes from 0.3 in the environment to 40 within the alveoli

because you are simultaneously doing gas diffusion
carbon dioxide happens at the same time

as air goes in we are adding water and carbon dioxide***

3

when does gas diffusion happen

happens simultaneously

4

why does o2 not be dropped off quickly to the tissue (the curve of how we drop off oxygen)

to ensure a little bit of 02 is dropped off to the entire tissue(s) that need it

5

Henrys law refers to the movement of ____

gas in air and fluid

6

gases move from ___ to ___ pressure

high to low

7

the bigger the gradient the ___ it moves

the faster

8

why do we get impairments in gas exchange

tissue becomes fibrous
surface area is lost
these can screw up the ability for gas exchange

9

the blood carries oxygen two ways

in physical solution dissolved in the fluid portion of blood

in loose combination with hemoglobin the iron-protein molecule within the red blood cell