Due to the presence of which structure is the pulmonary ventilation system in humans better developed than in reptiles and birds?

  • A
    Ribs and intercostal muscles
  • B
    Ribs only
  • C
    Intercostal muscles only
  • D
    Diaphragm

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Similar Questions

$I.$ Intra-pulmonary pressure remains less than the atmospheric pressure.
$II.$ There is negative pressure in the lungs compared to the atmospheric pressure.
In which of the above two situations does inspiration take place? Choose the correct option.

What happens during expiration?

What is the shape of the diaphragm during expiration?

Inspiration is initiated by

In rabbits,inspiration occurs by the contraction of:

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