Blood Gas Transport Flashcards
a gram of hemoglobin contains _____ oxygen
1.34 ml
arterial blood carries =
19.4 ml of oxygen per deciliter
returning venous blood carries =
14.4 ml of oxygen per deciliter
about 70% of carbon dioxide is
carried in the blood as bicarbonate ion
a partial oxygen pressure increase in the blood results in
an increase in bound oxygen
what factors cause the oxygen-hemoglobin curve to undergo a right downward shift?
decrease in pH, increase in carbon dioxide, increase in BPG, increase in temperature
Bohr effect occurs when there is an
increase in blood carbon dioxide
how would an increase in blood carbon dioxide effect the oxygen-hemoglobin curve?
shifts it to the right
when has the oxygen-hemoglobin curve undergone a “bohr effect” ?
right-downward shift
why does the bohr effect the oxygen-hemoglobin curve the way it does?
carbon dioxide displaces oxygen on hemoglobin
the haldane effect causes what?
a shift to the left on the oxygen-hemoglobin curve
where does the haldane effect occur?
in the lungs
when pO2 is above 1 mmHg…
the limiting factor for cellular chemical reactions is ADP
in order to maintain electrical neutrality, _____ utilize a ______
RBCs
bicarbonate/chloride ion co transporter
pulmonary edema occurs when pulmonary capillary pressure exceeds
25 mmHg
