What happens to the metabolic rate of skeletal muscle tissue during exercise? What waste products are produced from metabolic reactions? How and why does this affect your rate of ventilation during exercise?

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Hi, everyone and welcome. Our next question says during exercise, the ventilation rate is increased to facilitate which of the following a removal of excess oxygen B, removal of excess carbon dioxide c formation of enough ketones d production of enough insulin. So what is it that is helpful from having a more rapid breathing rate when you're exercising and an increased ventilation rate? Well, what's happening happening during exercise? There's increased, there is increased oxygen demand from the muscles and increased carbon dioxide production due to increased metabolism of the muscle cells. So when we look at choice, a removal of excess oxygen, this just doesn't make any sense. There isn't excess oxygen around the oxygen is getting depleted by the exercise. So choice A definitely not correct then choice B removal of excess carbon dioxide. This is indeed something that you would have benefit from increased ventilation as the body is producing more carbon dioxide, more rapid breathing is going to eliminate carbon dioxide more quickly. I've just put a dot Here, we can make sure we don't have any more correct answer to. I see formation of enough ketones. Well, ketones and hyperventilation are related, but it's not a matter of needing to increase formation of ketones. Ketones are produced when the body begins to break down fats. When it doesn't have enough glucose to use for energy ketones are acidic. So they lower the ph of the blood as does carbon dioxide. So, in response to compensate for the lower blood ph, the body starts to go into hyperventilation to eliminate carbon dioxide in attempt to raise blood ph. So there's a connection between high ketones and hyperventilation as a compensatory mechanism, but not you don't have faster respiration to form enough ketones. Ketones are sort of an unwanted by-product choice D production of enough insulin. Again, as we saw there's this connection there because if there's not enough insulin, then the cells can't get enough glucose. They need to break down fats for energy. They produced ketones and you have the effects mentioned above. So low insulin levels can lead to hyperventilation as happens in diabetic ketoacidosis, but increased ventilation doesn't cause production of insulin. So choice D is not correct. So we definitely will choose choice. B as our answer that during exercise ventilation rate is increased to facilitate choice B the removal of excess carbon dioxide. See you in the next video.

What happens to the metabolic rate of skeletal muscle tissue during exercise? What waste products are produced from metabolic reactions? How and why does this affect your rate of ventilation during exercise?

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Key Concepts

Metabolic Rate

Waste Products of Metabolism

Ventilation Rate