Anatomy is the branch of biology that deals with the study of the shape and structure of different body parts in organisms. The classical model of stomach anatomy suggests that the organ has four distinguishable sections, namely, cardia, fundus, corpus and pylorus. This is the first region of the stomach which lies immediately next to lower end the esophagus.
In the anatomy of stomach, it is the uppermost portion, forming the upper curvature of the organ. The word a€?corpusa€™ has been derived from Latin, and refers to the body or major part of something. The stomach wall is composed of four different types of layers, with each having its own structure and role in digestion. As the very name suggests, this is the mucus secreting layer that lines the interior of the stomach. Lying beneath the submucosa, this particular layer of stomach can be further divided into three layers, which are: outer longitudinal layer, middle circular layer and inner oblique layer.
Serosa or serous membrane is made up of two layers of epithelial cells, called visceral membrane and parietal layer. The secretions, like mucus, gastric acid, enzymes and hormones are the product of different gland cells found in the wall of stomach.
Also known as delomorphous or oxyntic cells, these cellular structures are found in the epithelium of stomach. Located in the fundic, cardiac as well as pyloric regions of the stomach, these are the mucus secreting cells.
Also termed as gastric zymogenic or peptic cells, the gastric chiefcells are present only in the deep mucosal layer of the fundic region of your stomach. With the help of various anatomical structures, your stomach plays a vital role in the digestion of food.
Mesenteric cysts also affect the stomach area and they too are thought to be the direct result of a malfunctioning lymphatic system. Information on this web site is provided for informational purposes only and is not a substitute for professional medical advice. These images in this section of our site have the original resolution, so they make quite large files, but are suitable for publication purposes.
The images are about 300K so depending of the connection downloading might take a few seconds. These Stomach Cancer pictures will show you some examples and teach you about the stomach and what it can look like.
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Concerning the stomach anatomy, it consists of four muscular layers, namely mucosa, sub-mucosa, muscularis externa and serosa.


Each of these partshas specific cell types which are assigned a specific role to play in the process of digestion. This is where the digested food collects before it enters the small intestine through the pyloric sphincter. Measuring about 1 mm in thickness, it contains the gastric pits and glands and has a soft, smooth and velvety surface. Besides providing mechanical support, the submucosal layer also connects mucosa to the smooth muscle layer.
The inner oblique layer assists in churning and physical breakdown of the dietary constituents.
A lubricating fluid, produced by serosa, is used to decrease friction caused by different layers of muscles moving against each other.
The parietal cells are responsible for the secretion of two important substances, namely hydrochloric acid (HCL) and intrinsic factor. The mucus, thus secreted, forms a gel-like layer to the interior of the stomach which serves as a protection against the corrosive effect of strong gastric acid. Stimulated by the acidic condition in the stomach and certain other factors, these cells release pepsin enzyme in its inactive form, called pepsinogen, which then carries out the digestion of proteins. After getting masticated in the mouth cavity, the food bolus is passed on to stomach via esophagus.
They may be undetected for a long period of time because they cannot be diagnosed without an x ray and not found for many years. The gastrointestinal tract and the rectum can be affected as well as any other organ like the bladder or liver. Mucosa is the main layer containing glands which are responsible for secreting enzymes, hydrochloric acid and mucusa€”all to aid in the digestion of food.The outermost layer of muscularis externa is called the longitudinal layer.
Leta€™s have a look on each of the four regions of stomach, while highlighting the composition, placement and functioning of each.
Here you can see that the stratified squamous structure of epithelium undergoes transformation into columnar layout.
With the facilitation of this lowermost section of stomach, the churned and partly digested food is emptied into the small intestine for further digestion and absorption.
While moving from cardiac to the pyloric end, the thickness of gastric mucosa goes on increasing gradually. While going towards the mucus membrane, the nerves and vessels (including blood vessels) pass through this layer of stomach. The middle circular layer has a role in the formation of pyloric sphincter at the lower end of stomach, which regulates the passage of chyme from stomach into the small intestine.
Depending on their placement in the stomach, foveolar cells can also be termed as mucus neck cells or surface mucous cells. These are considered very important because of their ability to secrete various kinds of peptides or gastrointestinal hormones. The secretion of gastric lipase, on the other hand, allows for the chemical breakdown of lipids present in the food. Although the may become painful if they grow to be large, they usually have little or no symptoms.


If You want to publish any of these images, please contact Science Photo Library, the leading provider of science images. The masticated food, coming from mouth, enters the cardia while leaving the esophagus or food gut through the lower esophageal sphincter. Enzymes and acidic secretions assist in the digestion of food, especially the protein constituents. Looking at its anatomical structure, you will find it further composed of muscularis mucosae, lamina propria and epithelium. Such mucus producing cells are also found in the intestine, but you can easily differentiate between faveolar cells and goblet cells (in the intestine) on the basis of their histology.
Playing the role of chemoreceptors, the enteroendocrine cells cause the initiation of digestive processes. The coordinated movements of the stomach wall muscles assists in physical breakdown of food, while chemical breakdown is accomplished by the acidic and enzymatic secretions.
When they are fully formed they can detach themselves and move around until they become lodged in the tissues surrounding the organs. This condition can be corrected with surgery but only a small amount of people actually get a mesenteric cyst.
The presence of the ducts of gastric glands renders its inner surface a honeycomb appearance. They have also been seen as identifying harmful substances in the food and triggering protective responses.
Having passed through the process of gastric digestion, food material assumes the shape of chyme, which is then transferred to the small intestine via pyloric sphincter for further breakdown and ultimate absorption into the blood stream. The egg may become blocked in the closed off follicle and this may result in a sac filled with fluid. The only problem is that my inner thighs are touching and I really wanna do something about it! Many times these types of cysts can go away on their own and no further medical help is needed.
Do you or anyone have any tips or excersices that I could do that will help me get a thigh gap? But if they become too large they can rupture and break so they may need to be surgically removed.
The earlier the detection of this condition, the less likely the person will suffer from it.
Symptoms of ovarian cysts are pain during periods, uncomfortable bowel movements and pain during sex.
But if left undetected, the liver can hold large amounts of bile and the bile can actually end up weighing as much or more than the liver. People who suffer with this type of stomach cyst are more likely to get gallbladder cancer, but this condition can be corrected with surgery.



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