a. Differentiate clearly between minute ventilation and alveolar ventilation rate. b. Which provides a more accurate measure of ventilatory efficiency, and why?

Video transcript

Hi, everyone. Let's look at our next question. What does ventilatory efficiency measure a, the ability of the respiratory system to exchange gasses effectively? B the rate of carbon dioxide production during respiration. C the volume of air breathes in a minute or d the balance between energy metabolism and gas exchange. Well, if we are not completely sure of this, hopefully, that concept of efficiency and we have ventilatory. So efficiency of the ventilation or the breathing system can help lead us to our correct answer of choice. A the ability of the respiratory system to exchange gasses effectively and more specifically, uh the exchange of oxygen and carbon dioxide while breathing. So this ends up being a measure of how effectively the body is delivering oxygen to tissues and removing that waste product of carbon dioxide. So we look at our other answer choices. Choice B which says the rate of carbon dioxide production. Well, this is part of that ventilatory efficiency but doesn't include the efficiency of delivery of oxygen. So it's only half of this measure. So that's why choice B isn't correct. So I see the volume of air breathe in a minute is a different parameter to describe uh respiration that's called the minute parameter. And you know, it does have an effect in the efficiency of ventilation, but it's not a specific measure of how efficiently those gasses are being exchanged. Um It's just describing how much air is being taken in over time. So that's why choice C isn't correct. And finally, choice d the balance between energy metabolism and gas exchange, uh that's obviously related because the body needs oxygen to produce energy. But again, it's not the specific measure of this efficiency that we're looking for. So that's why choice D is not correct. So again, ventilatory efficiency measures choice a, the ability of the respiratory system to exchange gasses. Effectively. See you in the next video.