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How does one calculate alveolar carbon dioxide partial pressure?
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Explain the functional importance of the partial vacuum that exists in the intrapleural space?
If not present (and the intra-alveolar pressure equaled atmospheric pressure) the lungs would collapse.
A falling blood pH and a rising partial pressure of carbon dioxide due to pneumonia or emphysema indicates?
a falling blood PH and a rising partial pressure of carbon dioxide due to pneumonia or emphysema indicates?
The partial pressure of carbon dioxide in venous blood is approximately?
46
What is the term that pertains to the exchange of gasses between the blood and alveolar air?
The air of the alveoli has a greater partial pressure of oxygen than blood and a lower partial pressure of carbon dioxide. This creates a gradient across the membrane. The gases diffuse from an area of high concentration to an area of low concentration, thus the carbon dioxide moves out of the blood into the air and the oxygen moves from the air into the blood. According to Fick's law this diffusion is porportional to (diffusion gradient x membrane permeability)/thickness of the membrane also called cellular respiration
What is the term that is used for the pressure of each gas in a mixture of gases?
The pressure of each gas in a mixture is called the partial pressure of that gas.
How do the structures of alveoli and capillaries support the function of gas exchange?
Exchange of gases in alveoli takes place through diffusion. This diffusion takes place to partial pressure differences among the gases O2 and CO2. The partial pressure of O2in alveolar sac = 103 mm Hg The partial pressure of O2 in blood = 50mm Hg The partial pressure of CO2 in alveolar sac = 28 mm Hg The partial pressure of CO2 in blood = 45 mm Hg As a result, the O2 from alveolar sacs diffuses into blood. the CO2 diffuses from blood into lungs.
Exchange of gases in the lungs?
blood entering the lungs has a partial pressure of oxygen (PO2) of 40 mmHg and a partial pressure of carbon dioxide (PCO2) of 46 mmHg; alveoli, on the other hand, have a PO2 of 105 mmHg and a PCO2 of 40 mmHg. As the blood moves past the alveoli, oxygen and carbon dioxide will diffuse down their respective partial pressure gradients. Oxygen will move from the alveolar space (PO2 of 105 mmHg) to the blood stream (PO2 of 40 mmHg). Carbon dioxide will move from the blood (PCO2 of 46 mmHg) to the alveolar space (PCO2 of 40 mmHg). As the blood leaves the alveolus, the PO2 and PCO2 will have essentially equilibrated with the alveolar air.
In deoxygenated blood is the partial pressure of carbon dioxide is greater than the partial pressure of oxygen left?
save
Explain the functional importance of the partial vacuum that exists in the intrapleural space?
If not present (and the intra-alveolar pressure equaled atmospheric pressure) the lungs would collapse.
A falling blood pH and a rising partial pressure of carbon dioxide due to pneumonia or emphysema indicates?
a falling blood PH and a rising partial pressure of carbon dioxide due to pneumonia or emphysema indicates?
What blood gas is value with a pH of 7.34 a partial pressure of oxygen of 80mmHg partial pressure of carbon dioxide of 49mmHg and HCO3 of 24mmHg?
metabolic acidosis
What is PaCO2?
The concentration of Carbon Dioxide in arterial blood. Partial (Pa) Carbon Dioxide (CO2) pressure in ABG.
Does partial pressure of oxygen increase during exercise?
You can consume up to ten times as much oxygen in exercise as at rest, and produce the same increase in CO2.
Which organ is responsible for regulating the partial pressure of carbon dioxide in body fluids?
brain
The partial pressure of carbon dioxide in venous blood is approximately?
46
What is the partial pressure of carbon dioxide in the blood returning to the lungs from the body?
46 mm Hg
How do you get the same amount of oxygen to dissolve in plasma as carbon dioxide you would have to?
Increase partial pressure of oxygen
