D Question 2 Experimental Overview: In this virtual lab activity, you will be exploring how changing lung volume, starti

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D Question 2 Experimental Overview In This Virtual Lab Activity You Will Be Exploring How Changing Lung Volume Starti 1 (60.06 KiB) Viewed 31 times

D Question 2 Experimental Overview: In this virtual lab activity, you will be exploring how changing lung volume, starting arterial Pco2 levels, and changing your metabolic activity effect your drive to breathe. To do this, you will hold your breath after performing some activity. Below is an brief outline of each of the breath-hold trials that you will perform, in the order that you will do them (each trial will have its own detailed instructions): 1. Hyperventilate, inhale maximally, then hold breath (wait at least 5 minutes between trials) 2. Inhale maximally, then hold breath (wait at least 5 minutes between trials) 3. Exhale maximally, then hold breath (wait at least 5 minutes between trials) 4. Re-breathe from a bag, inhale maximally, then hold breath (wait at least 5 minutes between trials) 5. Exercise, inhale maximally, then hold breath As CO₂ builds up in your blood, it is detected by chemoreceptors, which signal your respiratory control centers to increase your drive to breathe. The higher the arterial CO₂ levels get, the more you will want to breathe. The longer it takes for CO₂ to build up in your blood, the longer you can hold your breath. For each trial, it will be important to hold your breath as long as you can, going to the same perceived "breaking point" (i.e. the same urge to breathe) before giving up. Why is it important to wait 5 minutes between each breath-hold trial? 1 pts O Waiting 5 minutes allows time for the arterial oxygen level to decrease back to normal. O Waiting 5 minutes allows time for the arterial carbon dioxide level to decrease back to normal. O Waiting 5 minutes allows time for heart rate to return back to a normal level. O Waiting 5 minutes allows time for blood pressure to decrease back to normal levels.