Ventilation (concept problem),

[jeremy22511]

Ventilation (concept problem), please help

We breathe more fiercely when we do vigorous exercise. But what is the reason behind?

(1) The medulla oblongata senses the increase in blood CO₂ concentration.
(2) The receptors in our skeletal muscles send nerve impulses to the brain.

My textbook says (1) is the correct answer, but one of my reference books tells me otherwise...

 

[qedprigmosyno]

We breathe more fiercely when we do vigorous exercise. But what is the reason behind?

(1) The medulla oblongata senses the increase in blood CO₂ concentration.
(2) The receptors in our skeletal muscles send nerve impulses to the brain.

My textbook says (1) is the correct answer, but one of my reference books tells me otherwise...

It's the first.
Dissolved CO_2 turns into carbonic acid and a decrease in pH alerts your medulla, which fundamentally alters breathing
I'm not sure about the second one, but it would have to do with obtaining oxygen to produce the energy. I would still go with the first.

 

[quicknote]

As a scientist, it is important to consider multiple sources of information and critically evaluate the evidence presented. In this case, both options (1) and (2) have some scientific basis and could potentially contribute to the increase in breathing during vigorous exercise. However, the medulla oblongata is responsible for regulating breathing and detecting changes in blood CO2 levels, making it a more likely explanation for the increase in breathing during exercise. It is also supported by the fact that breathing rate increases even when exercising in environments with normal oxygen levels, indicating that it is not solely driven by the need for more oxygen. Therefore, while it is important to consider different perspectives, it is important to critically evaluate the evidence and rely on the most reliable and scientifically supported explanation.