 All right, the large intestine, its primary role is the absorption of water. It does absorb other things, but really it's less significant than the fact that it's basically compacting whatever is in there to make a nice little package for you to drop out in a doodoo. All right, so your large intestine is making your doodoo's. That is why if you don't absorb all the water out of what enters the large intestine from the small intestine, then you're going to have diarrhea and all your water is going to go out your doodoo. And a significant complication of diarrhea is dehydration because you can't keep your fluid in you. So let's name large intestine parts. First of all, what part of the small intestine is guaranteed to be attached to the large intestine? You know this, doggies. Oops. Eel, E, for E, etum. The eleum is the small intestine part that enters into the large intestine. And you will not wonder if you are in large intestine or small intestine. It's super obvious. You will not be able to tell if you are in eleum or jejunum or doodunum unless you have other markers nearby. For example, if you have a piece of small intestine and it's attached to a piece of large intestine, what is the small intestine part you are in? You're in the eleum. If you have this piece of small intestine that is attached to the stomach, what part of the small intestine are you in? You're in the doodunum. All the stuff in the middle, you can probably make a call and you do the best that you can if you don't have clues. The first part of the large intestine is called the cecum and hanging off the cecum is the appendix. And the appendix is this little worm-like pouch that is... There's all sorts of questions about what it actually does in humans, and the critters like rabbits. They actually put food in there. They're like, here, let's store this for later and there's lots of bacteria in there and so they get some extra digestion done in the appendix. Rabbits have all sorts of strategies to get some extra digestion done because it just so happens that they eat their poop too, round one of their poop. One flavor of their poop and then after it goes through a second time, how do they know they don't eat the second round of poop? Rabbits are cool. Okay, so the cecum, we enter first. Then we enter the ascending colon. Super straightforward. Then you get the transverse colon. Then you get the descending colon. And then a little S-shaped piece of colon called the sigmoid S-shaped colon. And then you have a friendly rectum and ends with the anus. That's it. Exorbing water during this time. They're actually, dude, this was kind of cool. There are little pouches in the rectum where your feces, they're like stop gaps so that if you cough or something or you fart, you don't poop on accident because these little weird-shaped curves almost like indentations in the rectum allow gas to head out without everything else heading out. Awesome. And oh, and there's a couple of sphincters in the anus. There's an internal sphincter and that one is not voluntary. Like if it opens, you can't be like, dude, I changed my mind. It's not a good time. Close, abort, no. When that one opens, it's open, but there's an external sphincter that you can control. So the external sphincter is made of skeletal muscle and that one you can like hold tight and cross your fingers and hope that you can make it to wherever you need to make it. Large intestine, dude, I think that's it. They're, yeah, we'll just call it. All right, let's go talk about accessory organs.