
Partial pressures of CO2 at alveoli and oxygenated blood are, respectively (in mmHg)
A.45,40
B.95.40
C.40,40
D.40,45
Answer
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Hint: The main function of the respiratory system is to absorb oxygen and remove carbon dioxide. The breathing oxygen enters the lungs and reaches the alveoli. The cell layer covering the alveoli and the surrounding blood vessels are each only one cell thick, and they are in very close contact with each other.
Complete answer:
Oxygenated blood: It enters the left half of the heart from the lungs through the inspiratory vein, which siphons blood to the rest of the body (see Heart Function). Without oxygen, the carbon dioxide-rich blood will re-enter the correct side of the heart through two huge veins (the main vena cava and the inferior vena cava). At that time, blood is siphoned through the lung airways to the lungs, where it absorbs oxygen and transports carbon dioxide.
To help ingest oxygen and carbon dioxide, about 5 to 8 liters (about 1.3 to 2.1 gallons) of air need to be inhaled and expelled from the lungs every minute, about every tenth of a liter (about three-tenths of a quart) in any Under circumstances, whenever an individual is very still, oxygen will be transferred from the alveoli to the blood. At the same time, a considerable amount of carbon dioxide moves from the blood to the alveoli and is exhaled.
Hence the correct answer is OPTION(D)
Note: The circulation is an essential link between the atmosphere, which contains oxygen, and the cells of the body, which expend oxygen. For instance, the conveyance of oxygen to the muscle cells all through the body depends on the lungs as well as on the capacity of the blood to convey oxygen and on the capacity of the dissemination to move blood to the muscle
Complete answer:
Oxygenated blood: It enters the left half of the heart from the lungs through the inspiratory vein, which siphons blood to the rest of the body (see Heart Function). Without oxygen, the carbon dioxide-rich blood will re-enter the correct side of the heart through two huge veins (the main vena cava and the inferior vena cava). At that time, blood is siphoned through the lung airways to the lungs, where it absorbs oxygen and transports carbon dioxide.
To help ingest oxygen and carbon dioxide, about 5 to 8 liters (about 1.3 to 2.1 gallons) of air need to be inhaled and expelled from the lungs every minute, about every tenth of a liter (about three-tenths of a quart) in any Under circumstances, whenever an individual is very still, oxygen will be transferred from the alveoli to the blood. At the same time, a considerable amount of carbon dioxide moves from the blood to the alveoli and is exhaled.
Hence the correct answer is OPTION(D)
Note: The circulation is an essential link between the atmosphere, which contains oxygen, and the cells of the body, which expend oxygen. For instance, the conveyance of oxygen to the muscle cells all through the body depends on the lungs as well as on the capacity of the blood to convey oxygen and on the capacity of the dissemination to move blood to the muscle
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