00:01
The first question is asking why carbon dioxide is added to the air that are provided to the patients.
00:06
It is because as the concentration of carbon dioxide increases in the blood, the carbon dioxide can easily diffuse across the blood -brain barrier.
00:18
And so the level of carbon dioxide in the extracellular fluid that is also called as ecf increases.
00:26
Also the increase in carbon dioxide concentration decreases the ph of the blood.
00:31
And this decrease in ph is accompanied by increasing the concentration of h plus ions.
00:37
And this increase in h plus ion concentration then triggers the central chemoreceptors of our brain, which further stimulates the respiratory centers.
00:48
And these respiratory centers initiate the contraction of diaphragm as well as the intercostal muscles.
00:55
And finally, as a result of this, the rate as well as the depth of respiration increases.
01:01
Therefore, more carbon dioxide will be expelled out from the blood, allowing the deeper respiration.
01:09
So from the given information, the current option for this question is option c...