Gastrointestinal System Essay

Gastrointestinal System Essay

Gastrointestinal System Essay

Complete your week 4 newsletter (260 to 350 words), in your own words.

Microsoft Word has a newsletter template that can be utilized for your assignment.

Each of the following elements must be included in your Gastrointestinal System newsletter.

Identify the structure and function of the gastrointestinal system.
Identify the major structures found in the system.
Define the function of this system.
Describe major diseases that affect the gastrointestinal system.
Identify 1 or 2 major diseases that affect the system.
Describe the disease(s) identified.Gastrointestinal System Essay
Describe major laboratory and diagnostic tests that are used to assess gastrointestinal diseases.
Using the disease(s) identified in the previous prompt, identify the most common laboratory and diagnostic test used to access the disease(s).
Describe the test identified.
Describe the main health care providers for the gastrointestinal department.
Identify the main health care providers in this department.
Describe the role they play (to the patient, facility, or community) and the types of patients they see (typical demographics, age, gender).
Cite at least 2 peer-reviewed, scholarly, or similar references. For additional information on how to properly cite your sources, log on to the Center for Writing Excellence.Gastrointestinal System Essay

When choosing between what system to write about, I thought the digestive system would be a good topic because food is probably one of my favorite things, not only cause it tastes good but because it gives me the energy to do all the things I need to do throughout the day. We talked in class about how you should always get the nutrients from food and never from supplements, which I’ve always tried to do. So, what is the digestive system? The digestive system is an assortment of organs that performs the process of digestion. The process of digestion involves food, containing nutrients, which is eaten and broken down into different segments. The digestive system also works with additional important systems in the body such as the circulatory system and the excretory system. The circulatory system receives all the absorbed nutrients through your body, and your excretory system filters compounds from the blood stream and collects them in urine. This whole system is designed distinctively, with the ultimate goal of turning food into the energy that you need to survive. The digestive system starts with the mouth and ends with the anus. (Studios, A. R, n.d)

When we eat, the nutrients and energy we need in order to function have to be extracted from food and absorbed into the body. The process responsible for this is known as digestion. The human digestive system has to be able to process our omnivorous feeding habits and diet, and has adapted this to function at an optimum level and is controlled by our autonomic nervous system by the brain.
The digestive system is a collective of automated processes and organs, enzymes, secretions, some accessory organs and a pipework (or tube) that starts at the mouth and ends at the anus, known as the alimentary. The processes that take place along the alimentary canal are how we take in these various nutrients, differentiate what that body can use for…show more content…
The sphincter prevents the fodd from travelling back up the oesophagus, except in the event of vomitting.Gastrointestinal System Essay

The digestive system is the the group of organs that changes food to carbohydrates, fats, and proteins and used by our body. Digestion takes places begins form our mouth and ends with our anus. the function of our digestion system are to ingest food, digest into nutrients, cross our plasma mambranes, absorb nutrients and eliminate indigestible remains. our stomach is our main organ because it mixes the food and breaks down into unis tha can be taken into carbohydrates, fats and proteins which can be used by our…

There are different parts of main organs of our digestive system, esophagus, stomach, large intestines, small intestine, liver, pancrea and finally our anus. As our digestion begins in our mouth, the food is cut an dchopped by our teeth. Our tongue helps mix the food with saliva so it can be swallowed easily. From our mouth, the food is swalllowed into a transportube called esophagus. Esophagus actually carried food to our stomach, through before that there is a flap called epiglottis which is an air passage and the food
passage in the pharynx. when you swallow, the air passage will automatically blocked by itself so the food won’t enter the esophagus though Our stomach is shaped as a J- shaped organs, when food is present, the stomach will mixing food with gastric juice, after that it will churns food into a liquid called chyme, and it will leaves the stomach enters the small intestine. the small intestine is a longest part of our digestive tract of human. food remains in the small intestine for several hours. Two lasrge galnds are the liver and the pancreas, which connect with the small intestine by ducts or tubes. Fluid from the ancreas is called pancreatic juice. fluid from the liver is called bile. bile is stored in the gallblader helps digest carbohydrates, proteins and fats.Gastrointestinal System Essay

We need food to gain energy in the body so that it is possible to live. Food stores nutrients that the  digestive system breaks down and transport it to the organs in the body. The digestive system is a process that breaks down food mechanically and chemically to give the cells in the body nourishment. Gastrointestinal System Essay
Food first has to get digested mechanically. When food is put into the mouth, the teeth bites off and chew food into the soft pulp that is easy to swallow. Then the salivary gland makes the food moist and slippery. The esophagus takes food from the throat and pushes it down through the stomach. It moves food by the way of contraction. Then the stomach mashes the food into a sloppy soup and starts to attack the food chemically with enzymes by breaking down and dissolving its nutrients.
The food chemically digest with the help of enzymes. After the food goes the stomach it enters the pancreas. The pancreas makes powerful digestive juices called enzymes to help the food digest as it enters the small intestines. In the small intestines, enzymes continue the chemical attack on the food, until the nutrients are small enough to pass through the lining of the small intestine and into the blood, in which they get stored and distributed in parts of the body, such as the liver. The liver stores some nutrients, changes them from one form to another, and releases them into the blood according to the activities and needs of the body. After the food enters the small intestines it goes into the large intestines. The large intestines absorb any useful substances in the leftovers, such as spare water and body minerals back into the blood. The remains form semi-solid faeces, ready to be removed from the body. The rectum stores faeces that are squeezed through a ring of muscle called the anus, and out of the body, ending the digestion.

The human digestive system, like those of other vertebrates, is built around an alimentary canal – a one way tube that passes through the body. The function of the digestive system is to convert foods into simple molecules that can be absorbed and used by the cells of the body.Gastrointestinal System Essay
Food enters the mouth, where the work of the digestive system begins. Chewing, which takes place in the mouth, seems simple enough – teeth tear and crush the moistened food to a fine paste until it is ready to be swallowed. But there is a great deal more than that. Teeth are anchored in the bones of the jaw by a network of blood vessels and nerves that enter through the roots of the teeth. The surfaces of the teeth, which are much tougher than ordinary bone, are protected by a coating of mineralized enamel. Teeth do much of the mechanical work for you.

After the bolus is swallowed, it passes through the esophagus, or food tube, into the stomach. Did you know that food can travel through the esophagus whether you’re sitting up, lying down, or standing on your head. Even in astronauts, food passes through the esophagus into the weightlessness of space. The reason is that food is moved along by contractions of smooth muscle surrounding the esophagus. Known as the peristalsis, these contractions, which occur throughout the alimentary canal, squeeze the food through the 25 centimeters of the esophagus.Gastrointestinal System Essay

Food from the esophagus empties into a large muscular sac called the stomach. A thick ring of muscle, known as the cardiac sphincter, closes the esophagus after food has passed into the stomach, preventing the contents of the stomach from moving back into the esophagus. The size of the stomach enables you to eat a few large meals a day, rather than having a nibble at a time. Its walls produce a powerful combination of enzymes and strong acids, and contractions of its smooth muscles thoroughly mix the food as you swallow.

The duodenum is the first of three parts of the small intestine, and its the place where most of the chemical work of digestion takes place. As a chyme enters from the stomach, it is mixed with enzymes and digestive fluids from the other accessory digestive organs and even from the lining of the duodenum itself.

What is the gastrointestinal tract?
The gastrointestinal tract is essentially a tube that extends from the mouth to the anus. It has generally the same structure throughout. There is a hollow portion of the tube known as the lumen, a muscular layer in the middle, and a layer of epithelial cells. These layers are responsible for maintaining the mucosal integrity of the tract.Gastrointestinal System Essay

What are the funcions of the gastrointestinal tract?
There are three main functions of the gastrointestinal tract, including transportation, digestion, and absorption of food. The mucosal integrity of the gastrointestinal tract and the functioning of its accessory organs are vital in maintaining the health of your patient. Components of the gastrointestinal system include the mouth, esophagus, stomach, small intestine, and large intestine. The gastrointestinal tract’s accessory organs include the liver, pancreas, and gallbladder (Jarvis, 2015 & Scanlon, 2015).

The mouth functions to break down food into smaller parts. The esophagus is the tube that allows the passage of the food bolus from the mouth to the stomach. It plays no part in the digestive process (Jarvis, 2015 & Scanlon, 2015).Gastrointestinal System Essay

The stomach functions to store, churn, and puree food into a substance known as chime. Gastric juices are secreted by the cells of the stomach, contributing to chemical digestion (Jarvis, 2015 & Scanlon, 2015).

The small intestine extends from the pylorus to the ileocecal valve. The small intestine is composed of the duodenum, jejunum, and ileum. The primary function of the small intestine is the absorption of vitamins and nutrients, including electrolytes, iron, carbohydrates, proteins, and fats. Most digestion of nutrients happens here (Jarvis, 2015 & Scanlon, 2015).

The large intestine extends from the terminal ileum at the ileocecal valve to the rectum. At the terminal ileum, the large intestine becomes the ascending colon, the transverse colon, and then the descending colon. Following the descending colon is the sigmoid colon and the rectum. The main function of the large intestine is water absorption. Typically, the large intestine absorbs about one and one-half liters of water per day. It can, however, absorb up to six liters (Jarvis, 2015 & Scanlon, 2015).Gastrointestinal System Essay

The gallbladder is a pear-shaped, sac-like organ attached to the liver that serves as a storage facility for bile. When a large or fatty meal is consumed, nerve and chemical signals (release of the enzyme CCK) cause the gallbladder to contract. This contraction releases bile into the digestive system (Jarvis, 2015 & Scanlon, 2015).

The liver is a very large organ located in the upper right abdomen. Blood supply to the liver arises from both the portal vein and hepatic artery. Nearly one-quarter of our cardiac output is delivered through the liver per minute, most of which travels through the portal vein. The blood is filtered through the liver, which destroy debris and unwanted organisms (Jarvis, 2015 & Scanlon, 2015).

The pancreas is both an endocrine and exocrine gland. The exocrine function of the pancreas is mainly digestive in nature and involves the secretion of pancreatic enzymes and bicarbonate (Jarvis, 2015 & Scanlon, 2015).Gastrointestinal System Essay

Having knowledge of the structure and functions of the gastrointestinal system will assist in the recognition and interpretation of assessment findings related to the patient’s history and physical exam. Gastrointestinal System Essay