Question

When CO₂concentration in blood increases,
breathing becomes
(a) shallower and slow
(b) there is no effect on breathing
(c) slow and deep
(d) faster and deeper

Answer 1

Option D

When CO₂concentration in blood increases,  breathing becomes faster and deeper

Explanation:

• The rise in carbon dioxide concentration in blood increments, the rate of breathing.
• The rise in carbon dioxide takes a conspicuous shift in the pH of the blood.
• This transition is sensed by the chemoreceptors of the medulla oblongata of the hindbrain which has a managerial centre for respiration.
• The respiratory centre enhances the rate of respiration to expire the excess carbon dioxide and breathe more oxygen.
• Thus, the CO2​ released in the tissues stimulates the delivery of O2​ summoned Bohr effect, due to-which breathing enhances faster and deeper.

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