Alright. For this example, it says, in the table below, descriptions of the 4 lung volumes are given. The graph shows spirometry results for a typical healthy female for reference. Fill in the empty cells in the table according to the following instructions.
So it says here. Write the name or abbreviation of the lung volume to which each description refers. Then rank the volumes in order of size from 1 to 4, 1 being the smallest and 4 being the largest. So, quickly, just for reference, behind my head here, we have this graph of those results showing the volume for, again, what we said was a typical healthy female.
Now, remember, this varies more than anything just based on body size. So let's go through some of these descriptions. Our first one here says, the amount able to be inhaled beyond normal inspiration.
Do you remember the name of that volume? Well, I'm going to look over at this graph here first. Remember, as we breathe in normally and then how much more can we breathe in, that's represented by that part of the line there. That's that blue section of this box here, and that we call the Inspiratory Reserve Volume. Put the v for volume there, and if you want the abbreviation, it's just the IRV.
Let's go through all these before we try to rank them in terms of size. Next, we have the amount left that cannot be removed from the lungs through expiration.
So, do you remember what that is called? Well, again, as we look at our graph here, that's the amount that, after you exhale as hard as you can, how much air is still left in your lungs. And so in our graph, that's this bottom beige section, and that is your Residual Volume or the RV, if you're using the abbreviation.
The next one here, it says the amount of air moved during quiet breathing. Do you remember that one? Well, the amount of air moving in and out during quiet breathing in our graph here, that's this pink section of this graph, and we call that your Tidal Volume or your TV for short.
And then finally, we have the amount able to be exhaled beyond normal expiration. Remember what that is.
So, in our graph here, we exhale normally, and then it, sort of, this part of the graph right there, how much more can you breathe out if you're trying to? So this sort of light-blue gray section there, and that was the Expiratory Reserve Volume. I'll just write the v there.
So now we just need to rank the sizes from 1 to 4 with 1 being the smallest. So, this is pretty easy, actually, with this graph here if you know what each one represents. So which one is the smallest? We'll start there with the one. Well, the Tidal Volume, as I see that there in pink, that's the smallest one.
Tidal Volume gets my one, and I'll just put here that we said is 500 milliliters.
What gets the 2? Well, the next biggest thing on here is this gray section of the light blue-gray section of that graph there, and that represented the Expiratory Reserve Volume. So I'm going to put a 2 there, and we said for that average size female, that was about 700 milliliters.
Next. What's the next biggest? Well, as I look at the graph, the next biggest thing here is this beige section. That beige section was the Residual Volume.
Residual Volume gets the 3, and we said that for an average size female was about 1100 milliliters. Again, the question doesn't ask for the volumes, but I'm just giving them there as a reminder. And then finally, we have the Inspiratory Reserve Volume. The last one we need to know there, and that is this biggest blue section on the top.
So that gets our 4. That's the biggest, and that, for an average-sized female, is going to be about 1900 milliliters.
There you go. Those are your lung volumes. We'll practice naming these some more and more practice problems. I'll see you there.