Looking for classes? Ksquare Career Institute, Bengaluru →
Breathing and Exchange of Gases
Regulation of respiration
3 questions from 3 papers, each with its answer.
- questions
- 3
- papers
- 3
- years asked, 2017–2026
- 1 of 10
- of Breathing and Exchange of Gases
- 5.66%
Appears in
Concepts tested
- Chemoreceptor response to carbon dioxide
- CO2 drive of breathing
- Regulation of respiration
All Questions
2022 Phase 2 1 question
-
Identify the region of human brain which has pneumotaxic centre that alters respiratory rate by reducing the duration of inspiration.The pneumotaxic centre in the pons moderates the respiratory rhythm centre; its neural signals reduce the duration of inspiration and thereby alter the respiratory rate.
2015 AIPMT-I 1 question
-
When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?Chemoreceptors in the medulla, aortic arch and carotid bodies sense $CO_2$, $O_2$ and pH of blood; $CO_2$ has the stronger effect.
Holding the breath raises blood $CO_2$, which stimulates breathing, so holding the breath beyond a point becomes impossible.
2004 AIPMT 1 question
-
When $CO_2$ concentration in blood increases, breathing becomes -A chemosensitive area near the respiratory rhythm centre in the medulla, and peripheral chemoreceptors in the aortic arch and carotid artery, are very sensitive to $CO_2$ and $H^+$ concentrations.
An increase in blood $CO_2$ (and the resulting rise in $H^+$) stimulates these receptors, which signal the respiratory centre.
The centre then increases both the rate and the depth of breathing, so that the excess $CO_2$ is removed faster.
So when $CO_2$ concentration in blood increases, breathing becomes faster and deeper.