Small intestine

by James Pickering, PhD

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    So we start off by looking at the surface anatomy of the small intestine and where exactly it is positioned within the abdomen. And then we going to look at the gross anatomy of it. So look at the three parts: Duodenum, Jejunum and Ileum. And look at the location of these areas. The relations they have to other organs within the abdomen. We will look at the wall structure and then, like of the stomach, we will look at its neurovascular supply. So small intestine is really important. It’s the main site for chemical digestion and then absorption. So receives bile from the liver And this helps to break down (emulsify) the fats. And it also receives digestive enzymes from the pancreas. So it's intimately associated, as we will see, with these organs. The chyme can then now be absorbed through the walls of the epithelium of the small intestine and then pass into the blood stream. So the small intestine finishes off this digestion and then allows absorption to occur. So we start, how we usually start with these lectures, and we will look briefly at the surface anatomy, the position of them as it's been put on to the torso. So here we can see, just in this one, we just have the initial part of the small intestine, the duodenum this "C" shaped structure. And this will be continuous with the "J" shaped stomach that we saw in the previous lecture. So we have got the stomach, we have got the oesophagus which is coming down in this direction. And we can see this "C" shaped duodenum, that's the first part of the small intestine. And we can't actually see that part of the small intestine that clearly on this diagram. Again we can see the...

    About the Lecture

    The lecture Small intestine by James Pickering, PhD is from the course Abdomen. It contains the following chapters:

    • Surface anatomy of the small intestine
    • Small intestine in situ
    • Wall structure of the small intestine
    • The Duodenum
    • The jejunum and ileum
    • The vasculature of the small intestine
    • Nerve supply of the small intestine
    • Conclusion

    Included Quiz Questions

    1. Upper left
    2. Upper right
    3. Lower left
    4. Lower right
    1. Caecum
    2. Duodenum
    3. Jejunum
    4. Ileum
    1. Ascending
    2. Descending
    3. Superior
    4. Inferior
    1. is greater in diameter
    2. is pinker in colour
    3. has higher quantities of fat in its associated mesentery
    4. has a reduced blood supply

    Author of lecture Small intestine

     James Pickering, PhD

    James Pickering, PhD

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    I really enjoy these lectures …
    By oralus p. on 31. May 2016 for Small intestine

    I really enjoy these lectures. I was wondering if there will be any lectures about the head and neck regions. I was also hoping to see lectures about the cranial nerves.