Facts about Stomach
The esophageal sphincter is found in the cardiac region and divides the tract from the esophagus, and the pyloric sphincter divides the stomach from the small intestine.
The stomach is located in the abdomen between the esophagus and the small intestine, sitting just below the diaphragm.
The words gastro- and gastric (meaning related to the stomach) are both derived from the Greek word gaster (??????).
Historically, it was widely believed that the highly acidic environment of the stomach would keep the stomach immune from infection.
The stomach needs only to push food into the small intestine when the intestine is not busy.
The stomach is divided into four sections, each of which has different cells and functions.
The stomach serves an important role in digestion, in which it has three main functions: Temporarily hold and store food, begin to breakdown macromacules (usually food) into smaller parts, and absorb certain molecules.
The word stomach is derived from the Latin stomachus, which derives from the Greek word stomachos (????????).
The stomach is surrounded by parasympathetic (stimulant) and orthosympathetic (inhibitor) peluxes (anterior gastric, posterior, superior and inferior, celiac and myenteric), which regulate both the secretory activity and the motor activity of the muscles.
The fundus of the stomach, and also the upper portion of the greater curvature, are supplied by the short gastric artery.
Lying beneath the stomach are the pancreas and the greater omentum, which is a large fold of peritoneum that hangs down from the stomach.
located under the submucosa; the muscularis externa in the stomach differs from that of other GI organs in that it has three layers of smooth muscle instead of two.
Assisting the acidic environment of the stomach are the various cells of the stomach, which release secretions that also aide in molecule breakdown and digestion.
Two smooth muscle valves, or sphincters, keep the contents of the stomach contained.
In anatomy, the stomach is a hollow muscular organ of the gastrointestinal tract involved in digestion.
The epithelium of the stomach (mucosa layer) forms deep pits and is layered with over 35,000 glands.
The movement and the flow of chemicals into the human stomach are controlled by the autonomic nervous system (specifically the sympathetic nervous system), the vagus nerve, and by the various digestive system hormones.
The stomach as it is known in humans is discussed in greater detail below.
One of the ways it is able to survive in the stomach involves its urease enzymes.
Carnivores tend to have more developed stomachs than herbivores due to their less frequent, heavier meals.
Other than gastrin, these hormones all act to turn off the stomach action.
Absorption of vitamin B12 from the small intestine is dependent on conjugation to a glycoprotein called intrinsic factor, which is produced by parietal cells of the stomach.
Such an environment enables the stomach to break down large molecules into smaller ones so that they can eventually be absorbed by the small intestine.
The stomach, or a related structure(s), is found in both vertebrates and invertebrates.
The stomach serves as a sac for interim food storage and it also initiates the food breakdown process.
The stomach of vertebrates is able to break down macromolecules due to its highly acidic environment, which causes molecular bond stress and forces them to break.
The human stomach lies between the esophagus and the duodenum (the first part of the small intestine).
The terms greater curvature and lesser curvature are often used to refer to specific parts of the stomach.
Apart from temporarily serving as a food storage cavity and initiating the breakdown process, another function of the stomach includes absorbing some ions, water, and some lipid soluble compounds, such as alcohol, aspirin, and caffeine.
The shape, size, and anatomy of the stomach can vary, however, depending on the species.
The lesser curvature of the stomach is supplied by the right gastric artery inferiorly, and the left gastric artery superiorly, which also supplies the cardiac region.
At its widest point, the stomach measures 12 inches (30.5 cm) long by 6 inches (15.2 cm) wide.
In birds, the stomach is made up of a proventriculus and a gizzard, both which work together in digestion.
The lesser curvature refers to the right, or medial, border of the stomach.
The stomach can produce and secrete about 2 to 3 liters of gastric acid per day, with secretion levels peaking during the evening hours in humans.
The main function of the stomach is to break down and digest food in order to extract necessary nutrients from what you have eaten. In order for this to happen, it is necessary that the stomach, the digestive glands and the intestines must produce various enzymes, including pepsin, and acid.Jul 21, 2012
These cells transport the molecules into the blood stream so that other cells in the body can use them. The digestive tract also serves to eliminate what your body doesn't absorb during the digestive process. The stomach has two major functions in your body: one for digestion and one for defense.
When making a skydive, most airplanes are flying at around 100mph. As you exit the plane, you will quickly transition into terminal velocity which is a stable feeling as you literally ride on air molecules. The transition from 100mph to approximately 120mph is so quick your that stomach doesn't drop.Jul 21, 2014
You can reduce belching if you:Eat and drink slowly. Taking your time can help you swallow less air. ... Avoid carbonated drinks and beer. They release carbon dioxide gas.Skip the gum and hard candy. ... Don't smoke. ... Check your dentures. ... Get moving. ... Treat heartburn.