Study BIOL 472 Topic 16 Flash Cards

 
Pile Management Card
BIOL 472 Topic 16

loading
CO
210x affinity for Hb than O2
-displaces O2
-anemic hypoxia
Cl- shift
-excess HCO3- builds in RBC
-exchanged with Cl-
HCO3- enters plasma
carbonic anhydrase
-CO2 highly soluble in blood/freely diffusable across RBC membrane
-speeds up rxn in either direction
-H+ buffered by Hb
submarien
-air compressed by water
-going to surface, you have to exhale as lungs inflate
snorkle tubes
-more dead space
-coud exceed lung's ability to echange air
nitrogen narcosis
-high [N] (like diving) have a narcotic effect
-poor decision
-buddy system!

SCUBA divers use tanks of mixtures of noble gases (He) to displace N
the bends
-elevated N2 in blood due to increased H20 presure
-1 atm for every 66 ft
-if too much time at depth or rapid surface recovery
-N bubbles released into blood stream, joints
-arterial blokage
joint pain
-explosive decompression/air embolism
anemic hypoxia
arterial oxygen pressure is normal, but total oxygen content of the blood is reduced
-treatment w/ hyperbaric chamber
-transfusion
Mb
higher affinity for O2 than Hb
mountain sickness
-increased arterial diameters
-BP dereases
-lower pO2 in alveoli
decreases O2 to body
-hyperventilation and alkalosis
-endema in lungs and nervous system
-coma/death
high alt
-more BPG produciton
-O2 less tightly bound
-easy to dump off O2
fetal Hb binding
-low affinity for BPG
-higher affinity for O2 than maternal blood
-left shift of curve
shift to the right in dissociaiton curve (dumps off more O2)
low pH
increase in CO2
increase in temp
increase in DPG
p50 value
when Hb 50% saturated
higher p50 value, the lower the affinity of Hb for O2
CO2 forms in blood
1. HCO3 (70%)
2. bound to Hb (23%)
3. free CO2 gas (7%)
venous side caps
O2 dumped off
CO2 gained

N2: 573
O2: 40
CO2: 46
Arterial gas
lowers O2 levels
lung arteries supplying O2 dump deoxygenated blood into pulmonary vein prior to entrance into left heart

N2; 570
O2: 95 (lower than alveoli air)
CO2: 40
alveolar gas
O2 constantly being absorbed (lower)
CO2 constantly being released (higher)
moister (more H2O)

N2: 570
O2: 100
CO2: 40
H2O: 50
normal atm []s
N2; 78% (600)
O2: 21% (160)
H2O: 0.5% (6)
CO2: 0.04% (3)
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