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Hello again! We're going to continue with our anatomy of the digestive system. Last day we

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studied the mouth, the esophagus and the stomach. Today we're going to continue with some glands

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related to the digestive system, liver and pancreas and we continue our journey through

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the small and large intestine. Let's start! We start with the liver and pancreas. So

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you need to write the title on your notebook, remember the left side of your

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notebook, and we're going to use this picture that you have on the paper that

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I gave you in class, okay? This picture we cut it and we glue it on our notebook.

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And now we're going to learn some more about liver and pancreas, so everything I

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right on the board, you're going to write it on one side or underneath the picture.

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The liver is a gland that has a very important function in our system. We're going to study now

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the function of the digestive system. Basically, the liver secretes the bile. And what's the

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bile? The secretion of the liver, but it doesn't go directly to the intestine, but before it passes

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to the gallbladder, which in Spanish is vesícula biliar. There it stays until the digestion takes

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place and then it's secreted to the duodenum. The function of the bile is to act as a detergent to

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lipids. What does it mean? That the lipids are going to be in the duodenum and then the bile

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comes and it goes all around the lipids and helps to digest them. The pancreas. The pancreas secretes

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pancreatic juices. These pancreatic juices secreted to the duodenum helps to digest

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proteins and make proteins smaller to amino acids. On the small intestine you should glue

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the following uh the following current of your paper okay if you don't have space maybe you can

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fold it a little bit so it can open and close there are some things that you don't need to

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learn okay you need to learn the parts of the small small intestine which has the duodenum

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the union and ileum and you will need to know the position of it you will need to know that

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their intestinal folds okay which are here um and that they have a the shape like fingers that they

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get inside the small intestine because they're gonna help with the absorption and this this

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picture here is a small section of the big one and in this section there are some things that you

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don't need to learn so you can cross it okay starting from here up we have the epithelium

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cross absorptive cell enterocyte cross a globet self close cross endocrine cell cross intestinal

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gland liver con gland cross cells of planet cross blood capillaries yes yes you need to learn that

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where are the blood groups and where it says lactial you instead of that you write lymphatic

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vessel and continue crypt cross brush border cross but yes you need to learn the microbial

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and villus. Let me tell you about the function of the small intestine. The main function of the

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small intestine is absorption. The nutrients that are now really, really small, we get into the

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small intestine and the small intestine has a large surface area which is going to help to

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absorb the cells in the small intestine has a lot of elongation they are like fingers they have like

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small fingers and that increases a lot the surface that the small intestine can absorb substances

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so basically the small intestine function is absorption and it has a large large structures

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to help with this absorption. Last but not least, we have the large intestine,

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the responsible for absorbing water. We have this picture that we're gonna glue

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under the title of large intestine on our notebook. We need to learn the

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different parts of the large intestine, which are the colon, ascending, transverse

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understanding the rectum and also remember that in the large intestine we

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have the appendix that is an organ that is responsible for some function of the

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immune system one function of the large intestine is to absorb water so we don't

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lose too much water in the process of digestion but also it's very important

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function of some bacteria which are there which is the gut flora that in spanish we call it flora

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intestinal these thanks to these bacteria on one hand we get vitamin k and also they transform

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undigested products into feces so without this bacteria we couldn't really live that's all about

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the digestive system remember that you will need to learn every single part of the digestive system

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the function that it performs and you have to relate all of them with the process of digestion