Oh, wow, oh, oh, wow, oh, wow, oh, man.

Oh, my life.

Oh, oh, wow. Hello, you're listening to the Science of Everything podcast, episode 122, respiratory and circulatory systems part one.

I'm your host, James Fodor.

In this two-part series of episodes, we're going to look at, well, as I said, the respiratory and the circulatory systems.

And that's going to include a discussion of the heart and the control of the heart rate,

blood vessels, how blood is circulated throughout the body,

discussion of the structure and function of blood and chemical and biochemical aspects thereof,

and a discussion of the respiratory system and the function and structure of the lungs,

breathing control of respiration and so forth.

Recommended pre-listening for this episode is episodes 25 and 26,

tissues and organs systems and human organ systems, episode 26.

Those both be helpful for understanding what I'm talking about here.

And that leads me to another important announcement that I need to make regarding the show, which is that some of you may have seen this on the Facebook group,

if you're a part of that. I ask people about what they think I should do. Basically, there's been

an issue that it's come to my attention that some of the early episodes of the podcast, roughly

the first 20 or so, or most of the first 20, have not been appearing on everyone's feed,

particularly if you use Spotify, although I think it may be an issue for some other platforms

as well. And looking into this, I've worked out the reason for that is because for some reason,

many of the earliest episodes were uploaded

in M4A format, fire format instead of MP3, which is what I use now. I don't know why I did that, to be

honest. It seems like a really odd format to use, but that was years ago. I think there was a reason at

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