Which of these is incorrect concerning inspiration?
a. The rib cage moves up and out.
b. The diaphragm contracts and moves down.
c. As pressure in lungs decreases, air comes rushing in.
d. The lungs expand because air comes rushing in.

Answer

D

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Video Transcript

Okay, so this one is about inspiration and that inspiration, Like a motivational poster but inspiration as an inhaling, of course. Then we have expiration being exhaling. Okay, So the inspiration is is this process when we inhale and and what exactly happened? So if we take a look if we have our lungs here? Okay, uh, there's also this die of Fram. It's it's right, right Under case this severe die fram. And as we as we inhale the rib cage, sit on the outside, right? Yes, it look like this is going to move up and out. And this is because as we inhale, the lungs fill with air. And so it's sort of treating space. Now the diaphragm, my friend, is actually moving down, right? This is all about treating. Creating space of the diaphragm gets out of the way to create space. Ah, sort of below. So that by a diaphragm moving down, we get We get space here, underneath and by the lung or the ribcage. Moving up and out. We get space sort of on the side and above and the, you know, the front, the back, right, So So these processes about increasing that cavalry space. So as this happens, one of the things that is how happening is since there's more sort of more space here, um, the lungs themselves are actually decreasing in air pressure. Okay, so we have a decrease. It's using the air, a decrease in air pressure. Right. So the diaphragm is moving sort of awful off of the lungs here, decreasing the air pressure. And and this decrease in air pressure causes causes air to Russian. Okay, But so it's not happening. Is that the lungs expand because air rushes in, right air rushes in because of the change in air pressure. S o the incorrect. Hey, incorrect statement is going to be D. The air doesn't Russian until still sort of after the air pressure decreases.

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