Bohr shift + blood vessels + hum phy

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Last updated 12:37 PM on 4/21/26
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6 Terms

1
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Bohr Shift

High CO2 conc. —> reduced affinity of Hb to O2 —> dissociation curve shifts RIGHT

2
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Mechanisms of CO2 REDUCING affinity

CO2 + H2O —> H++ HCO3- —> H+ REDUCES pH —> affinity REDUCES

CO2 binds REVERSIBLY to Hb polypeptides —> forms Carbaminohaemoglobin —> lower O2 affinity

3
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Which band shortens?

light (actin ONLY)

4
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low pH blood/ high CO2/ low O2 - signal sent where? and heart rate?

Sympathetic nerve —> SA node - HR: INCREASES

5
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high pH blood/ low CO2/ high O2 - signal sent where? and heart rate?

Vagus nerve —> SA node - HR: DECREASES

6
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Titin connect what to what?

myosin to z-disk