
68-6 Medical, Biomedical, and Health
If the partial pressure is lower than the tissue partial pressure, no oxygen is diused to the tissue, and
ti
ssue
d
amage
c
an
s
tart
to o
ccur
. E
quation
6
8
.3 s
hows
H
enry’s
l
aw:
C P=
α
s
O
*
2
(68.3)
where
C
i
s
t
he
c
oncentration
o
f
o
xygen
(
O
2
)
α
s
is the solubility coecient
PO
2
is the partial pressure of oxygen
In
di
usion,
a pa
rtial
pr
essure
be
tween
th
e
ti
ssue
an
d
bl
ood
su
pply
is tr
ying
to ma
intain
eq
uilib-
rium
. Di
usion
wi
ll
oc
cur
un
til
th
e
tw
o
pa
rtial
pr
essures
ar
e
eq
ual
. Eq
uation
68.4 sh
ows
di
usion
eq
uilibrium:
P
C C
O
s1 s2
2
1 2
= =
α α
(6
8
.4)
e rate of oxygen diusion is dependent on the dierence in partial pressure. ...