Digestive System Research Paper

The alimentary canal is where the digestive system takes place; it has different components in order for food to be thoroughly processed. The digestive system is composed of an enteric nervous system and has four layers of tissues; the mucosa, submucosa, muscularis externa, and serosa. Food enters through the mouth and passes through the esophagus, stomach, small intestine, and the large intestine before exiting the body through the anal canal. This occurs within the digestive system in four main steps; ingestion, where food enters through the mouth, digestion where food is broken down physically and chemically, absorption where nutrients are taken to their desired organ for use in the body, and elimination where waste is removed from the body due to being useless or toxic.When it comes to the human body there are plenty of components that we take for granted. Think about it, when was the last time you dwelled upon the function of your saliva or pondered on the responsibility of the esophagus? If you are like me, the answer to the question is simple, never. It is because our body is one of the greatest and yet most underappreciated machinery known to man. Within that system, which tends to get a lack of appreciation, stands alone one main process that we utilize on a daily basis and rarely give credence to its importance. This process is known as digestion, which occurs in the alimentary canal also known as the digestive system. The digestive system consists of the

What are the three sections of the large intestine and what roles does each play in digestion or absorption?

The digestive system are organs converting food into energy and basic nutrients to feed the entire body.

Digestion is the mechanical and chemical breakdown of food that we eat and the process starts in the mouth and moves down the alimentary canal. In the mouth, large chucks of food are chewed into smaller particles and then moves down through the alimentary canal for chemical digestion, which is also essential for nutrients to be absorbed, by the small and large intestine. Chemical digestion involves the mixing of the food particles with different enzymes that further break them down. The alimentary canal is also known as the Gastrointestinal (GI) tract and consists of the mouth, esophagus, small intestine, large intestine, rectum and anus.

Once again we have been miniaturized in the submarine to continue the fantastic voyage of the digestive system. We will be touring a 55-year-old male. The host will be having a hamburger, French fries, and a root beer. We will be tracing lunch through the digestion process. Digestion is the process of turning the food that is ate into energy needed to survive and involves creating waste to be eliminated. (Mohan, 2010). The digestive tract is a long twisting tube that starts at the mouth and ends at the anus, called the alimentary canal. The wall of this tube is fashioned of four layers of tissue. The layers are listed from the inside coat to the outside coat: mucosa or mucus membrane, submucosa, muscularis, and serosa. The hollow space

One day me and my friends were going to science class, we were so excited to go because we were doing an experiment on the digestive system the whole class went except tommy, when told him to stay to keep the class safe. When we left he opened a bag of chips and we sat in his hand and he ate us. First we went inside the mouth were tommy cut and grinds and triggered his chemical in saliva glands to work with the mechanism of the tongue salivary glands in your mouth makes salivary amylase, which begins the digestive process by breaking down starch when you chew your food,that's how the food into was cut into smaller pieces, after that he swallowed the food and we went down the esophagus we saw epiglottis which is a flexible flap at the end of the larynx connecting it to the throat, it acts like a switch permitting air to pass through as you swallow the food, then we saw the peristalsis , a peristalsis is a muscle contracting in a wave like motion to move the food to the stomach after that we saw the lining of the esophagus, the lining of that esophagus is called a mucosa it runs down the windpipe and heart in front of the spinal cord to prevent food from just dropping into the windpipe, this is starting the digestion process, after that it takes us down the stomach, then

The digestive system contains nutrients, water, and electrolytes that the body needs to maintain a healthy lifestyle. “The organs of this system ingest, and absorb food and eliminate the undigested remains as feces” (Human Anatomy and Physiology, 2012). The process of the digestive system first starts by eating food through the mouth. After the food has been eaten, it then breaks down into subunits, process called digestion. Next is the movement of the food along the GI tract so all functions can be fulfilled. Then the absorption of the nutrients in the GI tract are delivered to cells through the blood. The elimination of indigestible molecules is the last step in the process. The alimentary canal walls have four tunics (layers). “Each of these tunics has a predominant tissue type and a specific function in the digestive process” (Human Anatomy and Physiology, 2012). The mucosa is the innermost layer and is a “wet epithelial membrane abutting the alimentary canal lumen” (Human Anatomy and Physiology, 2012). The mucous membrane “consists of a surface epithelium, a lamina propia, and a muscularis mucosa” (Human Anatomy and Physiology, 2012). The

The gastrointestinal tract, also known as the digestive tract or alimentary canal, consists a large, muscular tube with several hollow organs joint together, connecting from the mouth to the anus (PubMed Health, 2015). These hollow organs include the mouth, oesophagus, stomach, small intestine, large intestine and the anus. The main functions of this system include digestion, absorption, excretion and protection.

Underneath the gastric mucosa lies the submucosa, muscularis, and serosa layers. The submucosa consists of connective tissues, blood vessels and nerves. The blood vessels provide nutrients to the lining of the stomach and the nerves monitor smooth muscle contraction. This smooth muscle layer is called the muscularis and is composed of 3 layers of muscle fibers which aid in the mixing and propulsion of food through the digestive tract. Surrounding the muscularis is the serosa, which is the outermost layer of the stomach. It consists of a thin membrane which secretes serous fluid to prevent friction of the outside wall of the stomach as it expands.

Digestion in the colon consists of two main mechanisms, the first one is mechanical digestion in which digestion starts when the chyme passes through ileocecal sphincter; the characteristic movement of the colon is haustral churning in which colon walls contract and squeeze contents into the second haustrum. The final digestion mechanism is chemical digestion in which microorganisms that inhabit the lumen of large intestine digest and ferment colon contents and release gases as carbon dioxide, two mechanisms are challanging drug absorption from the colon. [11]

The gut or the gastrointestinal tract is our digestive system, located inside the body. The digestive system is working round the clock to absorb nutrients from the ingested food, process it and then expel the waste products out of the body. It comprises of mouth, esophagus, small intestine (small bowl) and colon (large bowel or the large intestine). The process of digestion begins in the mouth itself. The movement of food from one part of the intestine to another is called as a bowel movement.

The inferior portion of the ventral body cavity is the abdominopelvic cavity, which extends from the diaphragm to the pelvic and is encircled by the abdominal wall and the bones and muscles of the pelvis. The abdominopelvic cavity is encased by peritoneum. Peritoneum is a thin, extensive sheet of serous membrane and it is the largest of the body cavities (peritoneal cavity) and the most complexly arranged membrane in the body (Tirkes et al., 2012). Two continuous layers make up the peritoneum; the parietal peritoneum and the visceral peritoneum.

In the digestive tracts, the compartments incorporate the mouth and the pharynx. The pharynx then prompts to the throat and to the stomach. Us people have both, a small digestive tract and an internal organ. From the stomach it goes straight into the small digestive tract to process and the internal organ bargains more with waste etc. We likewise contain adornment organs, for example, the liver, which produces bile and the gallbladder, which stores the bile. Bile and pancreatic juice are made and put away in the duodenum. The stomach has three unique tracts with the deepest layer being, the mucosa, submucosa is the following layer created of generally connective tissue and the muscularis which is only a twofold layer of muscles. An extraordinary piece of vitality is utilized as a part of the digestive framework.

The human digestive system is a complex series of organs and glands that processes food. It is a coiled, muscular tube (6-9 meters long when fully extended) extending from the mouth to the anus. Inside this tube is a lining called the mucosa. In the mouth, stomach, and small intestine, the mucosa contains tiny glands that produce juices to help digest food. This tube also includes the pharynx, esophagus, large intestine, and anus.

In addition to the structural divisions of the small intestines, its structures includes its wall (Henry Gray). The outer wall of the small intestines is composed of smooth muscle tissue. The