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What is the effects of an increase in PCO2?
Plasma pH will Decrease
Does breathing rate increase or decrease when arterial PCO2 increases?
increases
How does exercise affect pO2 in the muscle cell?
Arterial po2 will not change because it's almost at maximum already. Venous po2 will decrease due to increased oxygen consumption by respiring muscle. Venous and arterial pCo2 will actually either stay the same or fall due to the increased ventilation stimulated by the increased Co2 production by respiring muscles. The increased pCO2 is detected by central and peripheral chemoreceptors and leads to increased ventilation, resulting in increased ventilation - causing pCo2 to remain normal or decrease. This mechanism cannot be used to explain the ventilation increase in light exercise because pCo2 hardly rises at all during light exercise, therefore the chemoreceptors may not be responsible for the mechanism resulting in increased ventilation,
The strongest stimulatory effect on pulmonary ventilation is?
PCO2 of the blood. Co2 removal is the biggest reason for breathing.
Is hypoxia a cardiac arrhthmia?
Hypoxia-->pCO2 increase-->chemoreceptors are stimulated-->VMC stimulated-->trachyarrythmia
Why does the heart rate rise after exercise?
Because when your PO2 levels in your blood decrease and PCO2 levels increase your body becomes acidic, and to compensate for that your lungs increase in respiration. also, your heart increases because it receives signals that says it needs more O2 to the areas that are using it up.
What to happens to breathing rate during jumping jacks?
Increases due to greater oxygen demands and a rising blood CO2 concentration (PCO2).
Is Alveolar PCO2 identical to atmospheric PCO2?
No, it is higher or the CO2 would not move out of the lungs.
What regulates activities?
pco2
The relative PO2 and PCO2 in pulmonary arteries and veins and systemic arteries and veins?
Pulmonary artery/Systemic veins PCO2 = 45 PO2 = 40 Pulmonary vein/Systemic arteries PCO2 = 40 PO2 = 100
When PCO2 declines bronchioles?
constrict
What type of membrane used in po2 and pco2 electrode?
Teflon is used for the membrane of pco2 electrodes as it allows for the diffusion of co2 but not ions.
