Answer:
Peter is correct. When taking a deep breath, the chest does move up and out as the diaphragm moves downward and the ribcage expands. This allows the lungs to fill with more air, providing us with the oxygen our body needs.
Step-by-step explanation:
In this question, Peter and Glen have different opinions about what happens to the chest when taking a deep breath. Let's break it down in the easiest way to understand.
When we take a deep breath, our lungs expand to let in more air. To accommodate the expansion of the lungs, the chest cavity also needs to make some adjustments. The chest cavity is a space enclosed by our ribcage, and it houses the lungs, heart, and other organs.
Peter says that the chest moves up and out when he takes a deep breath. This means that he believes the ribcage expands upwards and outward as he breathes in. Glen, on the other hand, says the opposite. He believes that the chest moves in or contracts when taking a deep breath.
Now let's determine who is correct. When we inhale deeply, the diaphragm, which is a dome-shaped muscle located beneath the lungs, contracts and moves downward. This downward movement of the diaphragm creates more space in the chest cavity. At the same time, the intercostal muscles between the ribs also contract, causing the ribcage to expand outward slightly.
So, based on this information, Peter is correct. When taking a deep breath, the chest does move up and out as the diaphragm moves downward and the ribcage expands. This allows the lungs to fill with more air, providing us with the oxygen our body needs.
It's important to note that breathing is a complex process involving various muscles and organs working together. Sometimes people may have different perceptions or misunderstandings about the movements involved, leading to differing opinions. In this case, Peter's explanation aligns with the actual physiological process of deep breathing.
Hope this helps!