What is the primary feedback used by the brain to control breathi...

Question

What is the primary feedback used by the brain to control breathing?
a. heart rate
b. partial pressure of O2
c. blood pH, which indicates O2 level
d. blood pH, which indicates CO2 level

Accepted Answer

Hello everyone and welcome to today's video. So which of the following receptors in the brain is sensitive to ph changes and thus controls breathing. Let's go over our answer choices so that we may begin solving this problem. Starting by answer choice. We have all small receptors as its name implies. This is going to be detecting changes in osmotic pressure so this is not going to be detecting changes in ph and we're going to cancel it out. Then we have photo receptors, these photo receptors are going to be detecting changes in light again this is not going to be detecting changes in ph and we're going to cancel it out. Then we have mechanized receptors that are going to be detecting changes in touch motion and just pressure and then rely on that information to the brain. Again this is not going to be detecting changes in ph and we're going to cancel them all. Then we have chemo receptors. We actually have certain chemo receptors in the brain in the medulla and the role is to detect ph changes within that area because of that that is going to be our correct answer choice and we're going to highlight it as a final answer to the question. I really hope this video helped you and I really hope to see you on the next one

What is the primary feedback used by the brain to control breathing? a. heart rate b. partial pressure of O2 c. blood pH, which indicates O2 level d. blood pH, which indicates CO2 level

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