Breathing and Exchange of Gases
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Why foetal haemoglobin has more affinity for O
2
than mother’s haemoglobin ?
The foetal haemoglobin has more affinity for O
2
because
it has to draw O
2
from mother’s haemoglobin by foetal haemoglobin.
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Why food does not enter trachea ?
Name the two centres responsible for the regulation of respiratory rhythm.
Exchange of gases continue to occur even during expiration, give reason.
Why the land animals have respiratory organs inside the body ?
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