STOMACH
Stomach, an organ belongs to the digestive system, plays an important role in human body. This J-shaped organ can be full with one liter of food. Stomach is located on left upper part of abdominal cavity, it connects the esophagus (upper) with the small intestine (below). To the left of the stomach, there is a spleen and to the right of it, we’ve got the liver. There are four sections of the stomach: cardia, fundus, body and pyloric. To control the openings into the stomach, the gastroesophageal sphincter relaxes and allowing food leave the stomach is the function of pyloric sphincter. The stomach wall has three layers of muscles that help it contracts in all direction to break food into smaller molecules. Moreover, this organ is lined by mucus coat to neutralize acid
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The digestive process begins in the mouth, known as the oral cavity, where food enters. Chewing breaks the food into pieces that are more easily swallowed, while saliva mixes with food to dissolve food molecules. After that the tongue pushes food toward esophagus. The esophagus is a muscular tube extending from the pharynx to the stomach. By means of a series of contractions, called peristalsis, the esophagus delivers food to the stomach. The stomach secretes acid by tiny glands. At the same time that protein is being digested with the enzyme pepsin to break down protein into smaller molecules. Beside these muscles of the stomach contracts rhythmically to squeeze food. All the directions the food becomes thick liquid like milk shake. Then the food arrives in the small intestine from the stomach through the opening of the pyloric sphincter. The pyloric sphincter muscle is the furthest part of the stomach that connects to the small intestine. The food fully digest and absorp nutrients in small intestine with the aid of liver, gall bladder, pancreas. So the digestive system is very necessary for
The stomach naturally produces acid, which is mainly responsible for food digestion and the destruction of any foreign pathogen or bacteria ingested with food. Acid is secreted by stimulating the partial
bottom edges are not tightly shut, and acid moves form the stomach up into the
•The forty five year old patient is diagnosed with the progressive cirrhosis inflaming the liver along with the parenchymal cells. The plain symptoms is manifested primarily because of the augmentation of edema internally in the lower abdomen.
One of the few differences in mink and human digestive organs is that the large intestine is much smaller in the mink and doesn’t coil around the abdominal cavity like the large intestine in a human organism. Furthermore, the size of the stomach in minks is required in order for them to eat much larger prey and be able to store more energy. The pyloric sphincter, which is useful in preventing the bringing back the food from the small intestine back into the stomach, plays a more significant role in the digestive process of the mink compared to a human. The mink and human are similarly related on an evolutionary chain.
Esophagus: Esophagus is a long straight tube which connects the pharynx to the stomach. Once the food has been reduced to a soft mush, the tongue pushes it to the throat which leads to a long straight tube called esophagus. The esophagus squeezes the mass of food with rhythmic muscle contraction called peristalsis which then forces the food to the stomach.
In order for this breakdown to happen, the ‘tube’ through which the food travels requires assistance from a number of other digestive organs starting with the salivary glands, and later receiving
The digestive systems functions are to digest food, absorb any end products that were digested (including vitamins and minerals). The physiological processes of the digestive system are ingestion, propulsion, mechanical breakdown, digestion, absorption and defecation. Mechanical digestion means to use force in order to break down food for example the use of chewing or the contraction of muscles. Chemical digestion is when the food is broken down chemically into smaller particles such as the use of the saliva in the mouth.
This is a J-shaped organ, that can contract or expand, depending on what’s inside, due to the nature of its elasticity. It has two valves, one at the opening called the cardiac sphincter, which prevent a back flow of food into oesophagus, and the other one at the exit called the pyloric sphincter (situated at the entrance of the duodenum), which regulates food leaving the stomach. (Tucker.
Mouth- Digestion begins in the mouth. Physical actions, such as chewing, breaks food into small parts so it can be easily digested. Next, salivary glands secrete an enzyme called saliva to mix with food to start the breaking down of carbohydrates (WebMD (2).) From the mouth, food travels to the pharynx, or throat, by swallowing,
...ve eaten, to break down the food into a liquid mixture and to slowly empty that liquid mixture into the small intestine. Once the bolus has entered your stomach it begins to be broken down with the help of the strong muscles and gastric juices which are located in the walls of your stomach. The gastric juices are made up of hydrochloric acid, water, and mucus- and the main enzyme inside of your stomach is what is known as pepsin, which needs to be surrounded in an acidic setting in order to do its job, that is to break down protein. Once the bolus has been inside of your stomach for long enough it begins to form into a liquid called chyme, and what keeps the chyme from flowing back into our esophagus are ring shaped muscles known as sphincters located at the beginnings and ends of the stomach and they have the task of controlling the flow of solids and liquids.
Imagine you are eating a sandwich containing wheat bread, ham, lettuce, and Swiss cheese. Do you ever wonder where the nutrients go from all of the previous listed ingredients? Well, when a bite of this sandwich is taken, the mouth produces a saliva enzyme called amylase. This enzyme immediately goes to work by breaking down the carbohydrates that are in the bread. Once, the bite is completely chewed, the contents then are swallowed and go down the esophagus and begin to head towards the upper esophageal sphincter and the is involuntarily pushed towards the stomach. The next passage for the sandwich is to go through the lower esophageal sphincter; which transports the sandwich into the stomach.
Haven't you ever wondered what would happen if you didn't have a digestive or circulatory system? Well, basically you wouldn't be able to be reading this or even be alive. While there are many important systems in the body, the circulatory and digestive are the two most important. There are many ways that they are similar, different, and how they work together.
During digestion, the body breaks down food into smaller molecules that could then be used by the body’s cells and tissues in order to perform functions. This starts off in the mouth with the physical movements of chewing and the chemical breakdown by saliva. Enzymes in the stomach break food down further after traveling from the mouth through the esophagus. The food from here then moves into the small intestine, where pancreatic juices and enzymes dissolve proteins, carbohydrates, and fibers, and bile from the liver breaks down fats into these small molecules. Any portion of the fibers or food that were unable to be broken down are passed from the small intestine to the large intestine, which is where the digestive tract transitions into the excretory tract, then the colon and out of the rectum. Any liquids that have been stripped of their nutrients by the body proceed from the stomach to the kidneys. In the kidneys, sodium ions (Na+), uric acid, and urea are exchanged with water, which moves urinary bladder and is excreted through the
Now the Cheetos have entered the stomach. The process of breaking down carbohydrates has already begun in the mouth and now more chemical and mechanical digestion will take place in the stomach. Once the bolus has entered the stomach, it mixes with gastric juice, starts protein digestion, and absorbs a limited amount. Here the chief cells secrete the inactive enzyme pepsinogen and the parietal calls secrete hydrochloric acid. When mixed together, they create pepsin. The pepsin works to breakdown the two grams of protein present in the Cheetos. Hormones are also present in the stomach and aid in the digestion process. The hormone, gastrin, increases the secretory activity of gastric glands. In the stomach, some salt from the Cheetos is absorbed through the wall. The Cheetos that entered the stomach has no...
The digestive system is a very important system in the human body. It is a group of organs that work together to turn food into energy and nutrients in the entire body. The food that was chewed in a humans’ mouth now passes through a long tube that is inside of the body that is known as the alimentary canal. The alimentary canal is made of the oral cavity, pharynx, esophagus, stomach, small intestines, and large intestines. Those few things are not the only important accessories of the digestive system there is also the teeth, tongue, salivary glands, liver, gallbladder, and pancreas.