Overview – Anterolateral Abdominal Wall

by James Pickering, PhD

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    00:08 So, in this lecture, we are going to look at the anterolateral abdominal wall.

    00:14 So, on the screen, we can see we have the torso of a human which has had the skin removed to see the musculature and underlying fascial fibrous tissue that is within the trunk. Specifically, in this lecture, we are going to look at a series of muscles that make up this abdominal wall, look at internal oblique, external oblique, transversus abdominis, rectus abdominis.

    00:40 We will also look at their attachments: where they originate, where they insert and what function, what movement they carry out and what important roles they have for the correct functioning of the abdomen. We will also look at some aponeurosis which are flattened tendons of these muscles and we will look at important structure known as the rectus sheath. Throughout the lecture, we will look at some important neurovascular structures, the arteries, the nerves, the veins of this region. And then, very briefly, we will introduce the inguinal regions and specifically, the inguinal canal. And in the next lecture, we will look at this in a lot more detail.

    01:22 So, let's start off with some basics of the anterolateral abdominal wall.

    01:26 Here, we can see from anterior to posterior, we can see that most anteriorly, what you can see when you take your shirt off is the skin and we have this anterior layer of skin which we can see here. And deep to that layer of skin, we have some subcutaneous, some fatty tissue which we can see in this layer here which is immediately deep to the skin.

    01:51 And then in the more lateral aspect of the abdomen, so, not where we spoke about the rectus abdominis muscles in the previous lecture, but more laterally, we find we have three layers of muscles which we can see here, 1, 2 and 3. These are all oblique muscles and our transversus abdominis muscles. We then find deep again to... before we get into the viscera of the abdominal cavity the gastrointestinal tract which is depicted here, we have a couple of layers which are within this one line here called transversalis fascia as an important layer when we look at the inguinal canal and then finally, the peritoneum which we will talk about in detail in subsequent lectures.

    02:36 So, this is just the basic outline of a section through the abdominal wall from superficial to deep. We have got fats, we have got skin, we have got muscles and we have got important membranes, before we get into the viscera.

    About the Lecture

    The lecture Overview – Anterolateral Abdominal Wall by James Pickering, PhD is from the course Abdomen.

    Author of lecture Overview – Anterolateral Abdominal Wall

     James Pickering, PhD

    James Pickering, PhD

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    By Reginald I. on 27. May 2021 for Overview – Anterolateral Abdominal Wall

    he explained the layers very clear and understandable. Thanks a lot.