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Digestive system organs
Digestive system organs
Anatomy of the human body
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Hello everyone and welcome to the tour of Mr. Doe’s gastrointestinal tract. Today we will be catching a ride alongside the very unhealthy food he will be consuming in just a few minutes such as, a hamburger, French fries and a root beer. For the next few minutes, please take a moment to look at the images of each structure on the pamphlet which is located on the back of the seat in front of you. The digestive system consists of the digestive tract called alimentary canal which forms a continuous path from the mouth to the anus. I hope everyone is buckled in and excited to see the different structures within the digestive system located in Mr. Doe’s body today! Ladies and gentleman, please hold on tight as Mr. Doe takes a bite out of his hamburger in just a few seconds.
We have just made it to Mr. Doe’s mouth. As you can see, the hamburger and French fries are being broken down to small pieces with every chew so they can be easily digested. During this process, saliva mixes with the food so the body can absorb and use each carbohydrate, fat, and vitamin in various places like the blood stream for example. I am sure that the taste buds are enabling Mr. Doe to enjoy this disgustingly juicy burger! Taste buds are located near the back of the tongue but if you would like me to get technical with words, they are located at the posterior lateral area of the tongue! I can make a bet that some of you never knew that our tongue helps in the chewing, swallowing and ingestion of food while also helping clean our teeth. I know! Very weird right? Momentarily, we will begin accelerating downwards to the alimentary canal colliding in to various juices which actually contain enzymes. The alimentary canal is a long tube about 8 to 10 meters in leng...
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...m. Both the ileum and jejunum are coiled structures. The ileum contains villi and microvilli which in fact increase the surface area for digestion and absorption of food. All three sections of the small intestine have tube like glands in their walls which secrete juice into the intestinal lumen. This secreted juice helps to crush the food and mix it with other juices. This process helps it move forward to the large intestine which we are vastly approaching. The small intestine absorbs most of the nutrients. The large intestine is shorter and wider than the small intestine, ironically. It looks like we will be taking a detour towards the mucosal membrane.
The mucosal membrane in easy terms, is our own personal air filter. When functioning properly, it takes the air we breathe and cleans, warms and moistens it. It is also one of the bodies frontline defense systems.
...s membrane helps to keep dust particles out of our bodies. There is also an extensive network of blood vessels and normally appears pinkish, (Shier, Butler, Lewis, 2010). So now we wait for the patient to sneeze. Chances our once she sneezes us out, we are going to come out covered in mucous! GROSS!!!
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.
The pancreas is an elongated and flattened gland located within the abdomen. Not only is it a vital part of the digestive system, but it is also a key controller of blood sugar levels. (The Pancreas). The pancreas has been divided into four regions which are the head, neck, body, and tail. Being the widest part of the pancreas, the head is twenty-three millimeters. The part of the head that hooks towards the back of the abdomen is the uncinate (Chronic Pancreatitis Imaging). Between the head and body of the pancreas is the neck, which is about nineteen millimeters. The body of the pancreas is twenty millimeters, between the neck and the tail. The tail is the smallest part of the pancreas, measuring at only fifteen millimeters. (Parts of the Pancreas). The length of the pancreas in total ranges from four point seven to seven point one inches. The pancreas also weighs from seventy to one-hundred grams (How does the Pancreas Work?).
The digestive system is interesting, complex and truly important to our daily lives. Without the digestive system energy and nutrients vital to the body could never reach body cells and a person wouldn't be able to do all the things they like to do, such as study, play sports, and hang out with friends. The body uses various organs and chemicals to break down food. The breakdown of food he... ...
The digestive system of the horse consists of a simple stomach, small intestines, cecum, large and small colons, rectum and anus. The horse’s stomach is comparatively small for its size. The stomach of an average horse has a holding capacity of about two gallons. This may be the reason horses eat small but frequent meals. From the stomach food moves to the small intestine, which is the main site of digestion. The small intestine empties into the cecum. The cecum; along with the large colon; make up the large intestine. Digestion in the large intestine occurs by action of bacteria and protozoa. (arg.gov.sk.ca)
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
Food comes in the mouth, and chewing and saliva start to break it up and make it smaller to swallow. Then, the food goes down through the esophagus to the stomach. Moving of the stomach’s muscular wall keeps going to break down the food. The grinded up food eventually passes
4)Stomach: The stomach squeezes and mixes food with enzymes for hours before it releases the mixture into the small intestine.
Fig1. shows the human digestive system or the alimentary canal with different organs. (ladyofHats 2006).
Large Intestine- The large intestine is made of 3 parts; the cecum, the colon, and the rectum. Some refer to the large intestine as the colon, because the colon contains four separate parts; the ascending colon, the transverse colon, the descending colon, and the sigmoid colon (WebMD (2).) The cecum connects the small and the large intestine, acting as a transition area for food to travel. The ascending colon takes feces from the cecum to the transverse colon, during this process, bacteria digest fecal matter for the release of vitamins. The longest part of the colon, the transverse colon, is where the most absorption within the large intestine takes place. The descending colon transports feces from the transverse colon to the sigmoid colon. The descending colon walls also absorb water, nutrients, and vitamins from the feces, and can store the feces until it is read to be eliminated. The sigmoid colon can also
http://kidshealth.org/kid/cancer_center/HTBW/digestive_system.html ( I didnt copy direct quotes, however I had used the idea of the beginning in my research on the digestive system to help the reader better understand the system)
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.
The nose is divided into the right and left cavities and is lined with tiny hairs and mucous membrane, which secretes a sticky fluid, called mucus, which helps prevent dust and bacteria from entering the lungs. The nose moistens, warms and filters the air and is an organ, which senses smell. The naso-pharynx is the upper part of the nasal cavity behind the nose, and is lined with mucous membrane. The naso-pharynx continues to filter, warm and moisten the incoming air.
During the oral preparatory phase, the bolus enters the mouth, and stimulates the touch, temperature and taste receptors of the tongue and oropharynx (Groher, 2010). The receptors on the tongue provide information regarding volume, viscosity and taste and assist with oroproprioception (Logemann, 2014). The sensation of food within the mouth results in the secretion of saliva. Saliva helps break down the bolus. The motor movement of the oral preparatory phase varies depending up to consistency of the bolus.
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.