When a man inhales air containing a normal concentration of ${O_2}$ as well as $CO$,he suffers from suffocation because:

  • A
    $CO$ reacts with ${O_2}$ reducing its percentage in air.
  • B
    Haemoglobin combines with $CO$ instead of ${O_2}$ and the product cannot dissociate.
  • C
    $CO$ affects the diaphragm and intercostal muscles.
  • D
    $CO$ affects the nerves of the lungs.

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Similar Questions

The graph plotted between the percentage saturation of hemoglobin with oxygen and the partial pressure of oxygen $(pO_2)$ is known as:

Blood transports $CO_2$ in which of the following forms?

............$\%$ of $O_2$ is transported through the plasma in a dissolved state,nearly ...........$\%$ of $CO_2$ is transported by $RBCs,$ and ...................$\%$ of $CO_2$ is carried as bicarbonate.

$...\,\% \,CO_2$ is transported as carbaminohemoglobin.

Define the $O_{2}$ dissociation curve.

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