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Which of the following is lower in umbilical arterial
blood of a normal fetus than in maternal arterial
blood?
(A) Hematocrit
(B) O2 affinity
© O2 capacity
(D) PO2
(E) Viscosity

c

DD.....

dd

dd........

d

oh yeah, HbF causes left-shift of the O2-Hb dissociation curve, so the PO2 decreases
so answer is d then

dd