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The alveoli are the site of gas exchange in the lungs, where oxygen is taken up by the blood. The alveolar oxygen tension is higher than arterial oxygen tension because there is a gradient that drives oxygen diffusion from the alveoli into the blood. This difference is necessary to ensure efficient oxygen uptake by the blood in the lungs.
What else can I help you with?
Is CO2 more soluble in plasma and alveolar fluis than the oxygen?
No, oxygen is more soluble in plasma and alveolar fluid than carbon dioxide. However, carbon dioxide is transported in the blood more efficiently as bicarbonate ions and dissolved carbon dioxide, rather than in its gaseous form like oxygen.
What is the difference between sp02 and sa02?
Both are measurements of the saturation of hemoglobin with oxygen in arterial blood.The difference is how the measurement is taken SpO2 is an indirect measurement using a finger probe, ear sensor or similar device. SaO2 is a direct measurement using a blood sample such as an arterial blood gas analysis.
What explain is negative charge on the oxygen atom within the water molecule?
The oxygen atom in a water molecule has a slightly negative charge because oxygen is more electronegative than hydrogen. This causes the shared electrons in the covalent bond to spend more time around the oxygen atom, giving it a partial negative charge. This polarity allows water molecules to form hydrogen bonds with each other, resulting in unique properties such as high surface tension and cohesion.
Which is more electronegative O or Se?
Oxygen (O) is more electronegative than Selenium (Se) because oxygen is higher up and to the right in the periodic table, which increases its ability to attract and hold onto electrons in a chemical bond.
Why kerosene has more surface tension than water?
Kerosene has more surface tension than water because the molecules in kerosene are non-polar, which allows them to pack closely together at the surface. This stronger intermolecular attraction results in a higher surface tension compared to water, which has polar molecules that are more prone to forming hydrogen bonds, reducing surface tension.
What blood contains more oxygen?
Arterial blood typically contains more oxygen than venous blood. Arterial blood is oxygen-rich because it comes directly from the lungs after picking up oxygen, while venous blood has delivered its oxygen to the tissues and is returning to the heart to pick up more.
What are causes of dark venous blood?
it has more oxygen than arterial blood
Is CO2 more soluble in plasma and alveolar fluis than the oxygen?
No, oxygen is more soluble in plasma and alveolar fluid than carbon dioxide. However, carbon dioxide is transported in the blood more efficiently as bicarbonate ions and dissolved carbon dioxide, rather than in its gaseous form like oxygen.
Why does oxygen diffusion from the alveolus to the alveolar capillary occur?
Diffusion (of anything) occurs because of a concentration gradient meaning there is more oxygen in one place than another. Alveolus when you inhale will have a higher concentration of oxygen that that of the alveolar capillary resulting in a concentration gradient, this causing diffusion to occur until equilibrium is met. This means more oxygen in alveolus so oxygen travels into the alveolar capillary until a balanced amount of oxygen is in both places, but then of course the oxygen is transported and you exhale and inhale so the process repeats.
How does arterial blood and venous blood differ with regard to their oxygen and carbon dioxide content?
Arterial blood have more Oxygen and venous blood have more CO2 except the pulmonary vien which carry oxygenated blood to the heart for pumping to arteries.
What substance is made by the lungs to help reduce the surface tension of water in the alveolar?
Pulmonary surfactant...see link for more information.
Why CO2 is more in alveolar air than expired air?
Alveolar air mixes with air in the anatomic dead space on its way, which is rich in oxygen. hence % of oxygen is more in expired air. Thus though amount of CO2 does not decrease, percentage decreases as inspired air contains very less amount of CO2 (0.03%).
Is blood in veins have oxygen?
Oxygen never fully dissociates from the haemoglobin in the red blood cells. There is a lot more oxygen in arterial blood, but there is still oxygen in veinal blood too.
Is pao2 and po2 the same?
Yes, PaO2 (partial pressure of oxygen in arterial blood) and pO2 (partial pressure of oxygen) are the same. PaO2 specifically refers to the measurement of oxygen in arterial blood, while pO2 is a more general term referring to the partial pressure of oxygen in any context.
What is the difference between sp02 and sa02?
Both are measurements of the saturation of hemoglobin with oxygen in arterial blood.The difference is how the measurement is taken SpO2 is an indirect measurement using a finger probe, ear sensor or similar device. SaO2 is a direct measurement using a blood sample such as an arterial blood gas analysis.
What the rationale for taking body temperature before doing ABG analysis?
ABG (Arterial Blood Gases) is a measurement of oxygen saturation in the arterial blood which supplies oxygenated blood to the body tissue and the extraction of oxygen from the hemoglobin at the capillary level. The amount of oxygen saturation of the hemoglobin (HbO2) depends on hemoglobin concentration and the arterial pressure often referred to as Hemoglobin / O2 dissociation curve. At lower body temperature, less oxygen is bounded to hemoglobin, while at higher temperature slightly more oxygen is bounded to hemoglobin. It is therefore important to know the body temperature when the ABG analysis is done so as to have a more meaningful interpretation of the result.
What does an oxygen saturation level of 66 percent mean?
It means 66% of the hemoglobin molecules are oxygenated. This is a very low reading for arterial blood -- not compatible with life (for a human) for more than a few minutes -- though it might be seen in venous blood. Normal arterial oxygen saturation percentage is in the 90s.
