Whether oxygen diffuses from the alveoli into the blood or not is dependent upon the partial pressure of _______________.

oxygen in the lungs and in the blood

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oxygen in the lungs only

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oxygen and carbon dioxide in the blood

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all gases in the atmosphere and blood

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Solution

The correct option is A
oxygen in the lungs and in the blood

This facilitates passive movement of the gases from a higher concentration to a lower concentration.

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Similar questions

Q. Fill in the blanks with approriate words.
In lungs, oxygen diffuses from air to venous blood because the partial pressure of oxygen in the lung air is .......... than the partial pressure of oxygen in the venous blood.

Q. Which of the following statements(s) is (are) true about respiration?
(a) During respiration, ribs move inward, the diaphragm is raised.
(b) In the alveoli, exchange of gases takes place, i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air.
(c) Haemoglobin has a greater affinity for oxygen than carbon dioxide.
(d) Alveoli increases the surface area for the exchange of gases.

Q. Assertion :Oxygenation of blood promotes the release of carbon-dioxide from the blood in the lungs. Reason: Carbon-dioxide is carried as bicarbonates in erythrocytes of blood.

Question 14
Which of the following statement(s) is (are) true about respiration?

(i) During inhalation, ribs move inward and the diaphragm is raised.
(ii) In the alveoli, exchange of gases takes place i.e., oxygen from alveolar air diffuses into blood and carbon dioxide from the blood into the alveolar air.
(iii) Haemoglobin has a greater affinity for carbon dioxide than oxygen.
(iv) Alveoli increase surface area for exchange of gases.

(a) (i) and (iv)
(b) (ii) and(iii)
(c) (i) and (iii)
(d) (ii) and (iv)

Q. How oxygen enters in blood from alveoli of lungs?

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Whether oxygen diffuses from the alveoli into the blood or not is dependent upon the partial pressure of _______________.

The correct option is A oxygen in the lungs and in the blood This facilitates passive movement of the gases from a higher concentration to a lower concentration.

The correct option is A
oxygen in the lungs and in the blood

This facilitates passive movement of the gases from a higher concentration to a lower concentration.