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The total thickness of respiratory diffusion membrane is

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Important Questions on Breathing and Exchange of Gases

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Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Identify the wrong statement with reference to transport of oxygen.

EASY

Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Gaseous exchange of oxygen and carbon dioxide between alveolar air and capillaries takes place by:

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Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Approximately seventy percent of carbon-dioxide absorbed by the blood will be transported to the lungs:

EASY

Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Partial pressures of

O_{2}

and

{CO}_{2}

in systemic vein carrying deoxygenated blood are

EASY

Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Compared to the atmosphere air, the alveolar air has:

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Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Study the following statements and pick up the correct one:

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Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

The partial pressure of oxygen in the alveoli of the lungs is:

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Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Bohr effect refers to

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Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

The atmospheric pressure is 760 mm Hg at the sea level. Which of the following ranges is nearest to the partial pressure of

C O_{2}

in mm Hg?

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Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Assertion ( $A$ ): Biconcave shape of mammalian $RBC$ facilitates gas exchange.

Reason ( $R$ ): Biconcave shape provides a high surface to volume ratio.

EASY

Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Which of the following factors favour the right side shift of the oxygen dissociation curve?

EASY

Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

The partial pressures (in

mmHg

) of oxygen

(O_{2})

and carbon dioxide

({CO}_{2})

at alveoli (the site of diffusion) are:

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Biology>Human Physiology>Breathing and Exchange of Gases>Exchange of Gases

Study the following forms of transport of respiratory gases
A) ${CO}_{2}$ as bicarbonates
B) $O_{2}$ through plasma
C) ${CO}_{2}$ as carbamino compounds
D) $O_{2}$ through $RBC$
E) ${CO}_{2}$ in a dissolved state
Arrange the above in sequence in ascending order based on their percentages.