Exams › NEET › Biology

When CO₂ concentration in blood increases, breathing becomes

1. (a) shallower and slow
2. (b) there is no effect on breathing
3. (c) slow and deep
4. (d) faster and deeper

Correct answer: (d) faster and deeper

Solution

An increase in blood CO₂ lowers pH and activates chemoreceptors, which stimulate the respiratory center in the brainstem. This makes breathing faster and deeper to expel more CO₂ and restore normal blood chemistry.

Related NEET Biology questions

• Skin is an accessory organ of respiration in
• Name the pulmonary disease in which alveolar surface area involved in gas exchange is drastically reduced due to damage in the alveolar walls.
• Name the chronic respiratory disorder caused mainly by cigarette smoking.
• Which of the following are the correct statement for respiration in human?
• Blood analysis of a patient reveals an unusually high quantity of carboxyhaemoglobin content. Which of the following conclusions is most likely to be correct? The patient has been inhaling polluted air containing unusually high content of
• Reduction in pH of blood will

⚔️ Practice NEET Biology free + battle 1v1 →