The Digestive System The digestive system is a system consisting of the mouth, oesophagus, stomach, gallbladder, small intestine, large intestine, the rectum and the anus. The functions of the digestive system are: • To break down food particles into molecules for digestion • To absorb into the bloodstream the small molecules produced by digestion • To eliminate un digested and unabsorbed foodstuffs and other waste products from the body The full digestive process begins at the mouth. The food enters the mouth and is chewed. This is call mastication and it gives the food a greater surface area which enables enzymes to break the food down making it easier to digest. The process of breaking down the food starts with the saliva in your mouth. …show more content…
The food then travels into the oesophagus. Your oesophagus is located near your trachea (windpipe). The epiglottis separates the nasal cavity and the lower airway from the passage of food whilst swallowing. The contractions of the muscles in your oesophagus push the food down your oesophagus and into your stomach. Your stomach is a hollow organ that holds food whilst it is being broken down by the enzymes. There is also strong acid released by the glands in the lining of the stomach which helps break down food into a more useable form and also aids in the destruction of most ingested bacteria. After the contents have successfully been broken down they are released into the small intestine. The small intestine is a 22 foot long tube that helps to break down the food with enzymes released from the pancreas and bile released form the liver. In this organ the process of Peristalsis is at work, pushing the food further and further through the small intestine towards the colon. These movements are stimulated by the presence of chyme. The small intestine begins with the duodenum which has the large responsibility of continuing to break down the food. The jejunum and ileum are …show more content…
Slow peristaltic activity moves the stool slowly along the colon. This slow movement allows reabsorption of water and electrolytes. This is the primary purpose of the colon. The large intestine is where the stool is formed. The stool is the leftover waste that has not been absorbed into the cells. The stool begins as a liquid state and slowly forms a solid. The stool is then stored in the sigmoid. The stool is stored here until something called at “mass movement” occurs and empties the stool into the rectum, the mass movement happens about once or twice a day. The stool usually takes about 36 hours to travel through the large intestine. After leaving the large intestine the stool enters the rectum. The rectum is an 8 inch long passage that connects the large intestine and the anus. It is the rectum’s job to store the stool and let the body know that there is a stool that is needed to be let out. When there is gas or stool that is needed to be released the sensors send a message to your brain and the brain decides whether the stool can be released. If the stool can be released the, sphincters relax and the rectum contracts, which then
The human digestive system is a system by which ingested food is acted upon by physical and chemical means to provide the body with absorbable nutrients and to excrete waste products (digestive system, 2017). It is vital for humans to understand the way their body works, to be able to main it in the best way possible. In mammals, the system includes the alimentary canal extending from the mouth to the anus, and the hormones and enzymes assisting in digestion (digestive system, 2017). With the topic of the perfect diet for a healthy human body being very controversial many struggle to maintain a healthy digestive system. Whether being a meat eater or a vegetarian is the way to go, the cost of living influences those decisions.
Crohn and his two co-workers, Oppenheimer and Ginzburg, presented a paper on “Terminal Ileitis”, and it was described in the features of Crohn’s disease to the JAMA. It was published later that year as a landmark article in the Journal of the American Medical Association aka “JAMA” and with the title “Regional Ileitis: A Pathologic and Chronic Entity.” The JAMA article was published at a time
I think it would be a good idea to explain what crohns just in case you don’t know. Crohns is a disease that involves poop, yes poop. When I first got diagnosed I was having a problem with talking about this because it was pooped based. So, my doctor made me say poop one hundred
It eventually eats away at my intestine until it deteriorates. Sadly, when I first noticed I had Crohn's, it was too late for a portion of my intestine. When I entered the hospital I thought i just had severe stomach cramps, when I left I had about a foot less intestine. From that moment on, my future was all I could think of. I was honestly terrified for what was to come as an adult.
This mixes with the stools, causing diarrhea. If the large intestine is affected, diarrhea may be small in quantity but affect the sufferer numerous times a day. If the small intestine is affected, diarrhea may be very large in quantity but affect the sufferer in less frequency. If you suffer from frequent diarrhea, you may become dehydrated because of the loss of liquids. Be sure to rehydrate with not only water, but salts and minerals to.
Ileostomy Surgery Ileostomy surgery redirects part of the small intestine (ileum) to an external opening (stoma) in the abdomen. This means that waste is passed through the stoma, instead of passing through the rest of the intestines and the rectum (bowel). The stoma may have a valve and a tube (catheter) to pass waste, and there may be an external pouch (ostomy pouch) attached to the stoma to collect waste. This procedure may be necessary when the bowel is diseased or partially removed. It can be temporary or permanent, and there are several types of ileostomy surgery.
The digestion tract for earthworms is much like the crayfish. Food enters the mouth and gets pushed down into the esophagus by the pharynx. Next in line is the crop; an organ very similar the cardiac stomach. In the crop food in held until it is moved into
The proper functioning of one system relies on the proper functioning of the other system. In other words, the digestive system needs to be in good working order to support the functions of the cardiovascular system. An example of the digestive and cardiovascular systems interrelating is: the first step in digestion of fat is to dissolve it into the intestine where bile acids produced by the liver dissolve the fat into fatty acids and cholesterol. The bile acids join with the fatty acids and cholesterol and vessels then carry the changed fat to the veins of the chest, and the blood carries the fat to storage in different parts of the body.
Science 1. Free ears in dogs are controlled by dominant allele (F), and attached ears are controlled by the recessive allele (f). In addition, Short dogs is due to a dominant allele(S), and long hair is due to a recessive allele (s). Which of the following is the genotype of the dogs with free ears and short hair? a. ffss b. FfSs c. ffSs d. Ffss 2.
The digestive system is responsible for chemically and mechanically breaking down food and includes organs such as, mouth, esophagus, stomach, small intestine, rectum, anus, and additional accessory organs. These organs all aid in the breakdown of food. Food is broken down mechanically by chewing and churning in the stomach, and chemically by acidic enzymes in the stomach and in the small intestine which receives enzymes from the pancreas that are specifically designed for the breakdown of nutrients. Once the food and nutrients are broken down, the excretory system removes whatever the body decides is waste by filtering blood in the nephrons of the kidneys and turning it into urine which is then collected in the bladder and removed from the body when the bladder is
Elimination covers wide ranges of aspect, such as urine, faeces, diarrhoea, emptying a catheter bag, vomiting etc. According to Perry, Peterson, and Potter (2003), normal elimination of the body wastes through the gastrointestinal and genitourinary tracts is a basic function that most people take for granted. Therefore, when either system fail, normal elimination does not take place. Elimination of liquid and solid waste products is normal routine and ordinary, except a change in habits or illness arises. Changes in bowel or bladder may be signs of illness or may be change of habit (drinking or eating).
(The abdomen consists of the lower part of the esophagus, stomach, small intestine, colon, rectum, liver, gallbladder, pancreas, spleen, kidneys, and bladder.) Pressure can come from coughing, vomiting, straining during a bowel movement, heavy lifting, or physical strain. Pregnancy, obesity, or extra fluid in the abdomen can also lead to a hiatal hernia. Who is at risk for developing a hiatal hernia?
Our gastrointestinal tracts work hard to keep us healthy and happy. When gut health is compromised, we can face major health consequences. Here’s how to use good nutrition to keep your digestion humming along. “Heal the gut and you heal yourself.” – Gerard E. Mullin, MD
The digestive system is located around the stomach area. Along with the digestive system, many other organ systems all work together to create an organism. An example of this would be if a person eats a sandwich and then goes for a run. During the run, the circulatory system helps the body breathe, the muscle system helps the bones move, and all the while the digestive system digests the food. Later on, the excretory system gets rid of the waste, or food that the body can’t use for nourishment.