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https://docs.google.com/document/d/13Fzhqt68hgaRRGJXYq1Lt9zvKLdERvJUr4nEhwGKB7M/edit

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In this exercise, a plastic straw is connected to my neck with blue-tac, around the area of the artery, where the pulse can be felt. The anatomy of that can be described are the plastic straw, blue tac that attaches the straw to my neck, and the artery located in that spot on my neck. In terms of physiology, what is happening is that when the artery expands and contracts, its vibrations cause the straw to make small movements. For exercise physiology, I believe that by exercising, the straw would move more frequently because as the heart-rate would increase, and cause the pulse felt on the neck to increase, thus causing the straw to move more rapidly.

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According to the graph from the investigation conducted in class, it can be seen that running in place requires the most breaths per minute, with 15, followed by squats, while sitting at rest has the lowest average exhales per minute.

The reason why running requires the most exhales is that of all the exercises, running requires the most muscle contractions. The contraction of muscles requires ATP as energy in order to function. Since oxygen is a reactant in the formula to produce ATP, more oxygen must be taken in in order to increase the production of ATP. This oxygen is taken in by breathing, explaining why exercises with more muscle contractions, require more exhales per minute. Since squats require a few contractions, the exhales per minute is slightly lower, with sitting at rest having the least exhales per minute as no muscle contractions are required.

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One interesting thing that I learned was how many small alveoli there are in the lungs. By squeezing my fingers against them, I was able to feel thousands of tiny little bubbles. I really wonder how different a live lung of a chainsmoker would look like. Would it appear smaller? Would it be of a different colour

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This graph allowed me to understand that the air is warmer when breathing through your nose, than it is when breathing through the mouth. I came to this conclusion as the temperature change of the first run, where air was inhaled through the nose and exhaled through the mouth, was more significant than that of the second run, where air was inhaled and exhaled through the mouth.