Peritoneal development, step 1, model, Rotation of stomach, duodenum, pancreas

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来自 Universiteit Leiden 的课程

Anatomy of the Abdomen and Pelvis; a journey from basis to clinic.

317 个评分

Universiteit Leiden

Anatomy of the Abdomen and Pelvis; a journey from basis to clinic.

317 个评分

In this anatomy course you will explore the organs involved in our food digestion and discover the common causes of abdominal and pelvic pain. The latest graphics and animations will help you to find new insights and understanding of this part of the body, that has been the focus of anatomical research for centuries and presently arouses renewed scientific interest. You will explore the 3D anatomy of the organs from a basic level, providing thorough anatomical understanding, to its advanced application in surgical procedures. This course will challenge you to discover and help you to understand the anatomy of the abdomen and pelvis in all its aspects, ranging from its embryological underpinnings, via digital microscopy to gross topography and its clinical applications. The course is unique in that it continuously connects basic anatomical knowledge from the lab with its medical applications and current diagnostic techniques. You’ll get the chance to discuss anatomical and clinical problems with peers and experts in forum discussions and you will receive guidance in exploring the wealth of anatomical information that has been gathered over the centuries. Follow us on an exciting journey through the abdomen and pelvis where you digest your food but also where new life starts!

从本节课中

Knowing your peritoneal relationships

You have already learned that the bowels are not arranged symmetrically left and right. The rotation processes of the gut and its suppliers have important consequences for the peritoneal coverings of the gut and the abdominal wall. It determines why some structures lie easily accessible in the abdomen and others are more hidden away. In this week you will get a grip on difficult concepts as 'intraperitoneal' and 'retroperitoneal'. It is also a starter week about abdominal surgery. You will also learn a secret: The best way to mobilize the abdominal and pelvic organs is to separate what got adhered when the patient was just an embryo! Please feel free to dive into these embryonic matters and enjoy all the twists and turns!

Peritoneal development1:04

Peritoneal development, step 0, model, Introduction8:09

Peritoneal development, step 1, model, Rotation of stomach, duodenum, pancreas3:57

Peritoneal development, step 2, model, Rotation of the bowels8:18

Peritoneal development, step 3, model. Development of the greater omentum4:06

Anatomy on the table - Peritoneal structures and relations – an overview6:51

与讲师见面

Marco De Ruiter, PhD
Professor of Clinical and Experimental Anatomy
Leiden University Medical Centre
Paul Gobée, MD
Assistent professor of Anatomy
Leiden University Medical Centre
Beerend P. Hierck, PHD.
Associate professor of developmental biology
Leiden University Medical Center
Daniël Jansma, MSc
E-Learning developer
Leiden University Medical Centre
Bas Boekestijn, MD
Trainee Radiology
Leiden University Medical Centre
Friso Jansen
Drs.
Leiden University Medical Centre

Okay, this is the second video of the videos showing you

the development of the peritoneal with the peritoneal model.

We're going to show you the development,

the embryological development of the peritoneum in three steps.

The rotation of the stomach and the duodenum,

the rotation of the intestines and the bulging of the greater omentum.

In fact, these three steps overlap each other but to make it easy,

to make it clarified, we separated this in separate steps.

So the first step is, rotation of the stomach and the duodenum.

You must imagine that originally the stomach was

a long tube just as the rest of the gut tube that is already formed here.

Because that was impossible to do different in the model.

But you must imagine at a certain moment,

the back side of the stomach elongates and thereby forms the greater curvature.

And the front side of the stomach retracts, decreases,

becomes shorter in length.

And there, it becomes the lesser curvature.

And because of this form change in the stomach,

also the duodenum is grown in its characteristic c-shape.

And these complex happenings,

developed the stomach and the duodenum into the well known s form.

Well, that's the first step and then more or less simultaneously, the stomach and

the pancreas and the duodenum.

start to rotate around their axis, and what happens is like this

And now what has happened, you see that the stomach and

the duodenum and the pancreas, they have rotated to the right side.

And they attach to the back wall and then we call them,

from that moment we call them secondary retroperitoneal.

That's because the intestine and the pancreas first was covered by peritoneum.

So, it was intraperitoneal, but now it has attached to the back wall.

It apparently seems as if the peritoneum,

If you would imagine that it runs on, it's difficult to make a distinction.

Not in this model, but in reality, so

it seems that the peritoneum runs over from the back wall to the duodenum.

But because it was intraperitoneal in the first,

we call it secondary retroperitoneal.

The fact that this duodenum and the pancreas attaches,

adheres to the backwall, is used by surgeons.

They can easily detach again the duodenum and the pancreas.

And thereby, reach the back of the pancreatic head and the duodenum.

So in this way, surgeons use the embryological knowledge.

Also you see, that a cavity has arisen behind the stomach,

the so called omental bursa.

In fact there's a large hole here, but that's because it's a model.

In fact, it's only a very small access way that I can reach by hooking my finger.

Around the hepatoduodenal ligament, and

then the opening into the omental bursa.

Where I'm with my finger now, is the foramen of omental or

the omental foramen or the foramen of Winslow.

And so, I can enter the omental bursa and

the omental bursa arose because of the rotation of the stomach

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