Biology assignment by Haider Hamad The Digestive system Introduction The aim of this project is to find out the difference between human digestive system and animal. Human Digestive System What is the Digestive system? The human digestive system is a complex series of organs and glands that processes food. In order to use the food we eat, our body has to break the food down into smaller molecules that it can process; it also has to excrete waste.Most of the digestive organs (like the stomach and intestines) are tube-like and contain the food as it makes its way through the body. The digestive system is essentially a long, twisting tube that runs from the mouth to the anus, plus a few other organs (like the liver and pancreas) that produce or store digestive chemicals.
The chyme is then pushed along the small intestine by peristalsis. As the chyme is digested, nutrients from the beef sandwich are released and absorbed through the villi and pass into the blood stream. The villi are part of the intestinal wall and increase
After turning into chyme, it is sufficiently processed enough to release into the small intestine. This is where the major digestion occurs, as well as where the water, vitamins, minerals and other nutrients are absorbed into the body. All that remains is a liquid substance which moves onto the large intestine also known as the colon. This is a six foot long muscular tube (hence the term large intestine) which connects the small intestine to the rectum. It is responsible for processing the waste and turning it into stool.
The cooked starch acts as the food, which the caterpillar would eat, and the alpha amylase, which is a digestive enzyme common in saliva, is stirred with it to simulate the chewing and mixing of food and saliva which constitutes the first step in the digestive system. Next two pieces of dialyses tubing were prepared by clamping one end of each piece of tubing shut with a clamp, and twisting the other end until it opens. For the purpose of the experiment, the tubing will represent the intestine of the caterpillar.Continuing on, a clean pipette was used to transfer four pipettes worth of the starch and alpha amylase solution into one of the pieces of tubing, while four pipettes of plain starch was added to the other in order to form a control. Next, two large beakers were filled two thirds of the way with distilled water. Four droppers worth of Lugol’s reagent was added two each beaker.
The Fantastic Voyage Victoria Johnson 73 HS130, Anatomy and Physiology Kaplan University 6/19/2012 Yes, again were back on our journey through the body, to explore what is unseen to the naked eye. We will be traveling through the gastrointestinal tract to monitor the digestion of this tasty Hamburger we are sitting on. The most important part of the gastrointestinal tract is the mouth, teeth and salivary glands; they all play a major process in breaking down the food and getting it ready to be swallowed. Wonderful fun fact-The food undergoes three kinds of processing while in the body, digestion absorption and metabolism (Thibodeau, 2008). As we have now been chewed up and swallowed we are now in the pharynx (throat) this tube like
Most important part of digestion takes place here. Nutrients are absorbed into the Villi and sent into the bloodstream where nutrients can travel to your cells. Large Intestine – Five feet long. Thicker and wider than small intestine. Undigested food travels into the large intestine.
SCI/241 THE SCIENCE OF NUTRITION January13,2012 Human Digestion How the does the digestive system works to absorbs nutrients? Digestion starts with the smell of food, it activates the salivary glands. The gland secret saliva that moistens food, it also contains a digestive enzyme called amylase that breaks down some carbohydrates before it leaves the mouth. Then the food is swallowed and goes into the lumen through the esophagus. The esophagus muscles contractions called peristalsis forces the food through the sphincter valve and into the stomach.
In between gulps of this nutritious meal, let us sneak in to his cavernous mouth. As we glide between his lips, which are pulled apart by his orbicularus oris, allow me to narrate our marvelous journey… through the digestive system. Digestion, a pertinent component of survival,
CU2653 Prepare For and Carry Out Extended Feeding Techniques 1.1Anatomy and physiology of the gastro-intestinal tract: Digestion of food begins in the mouth. When you swallow, food is pushed down into the oesophagus, a muscular tube that carries food to the stomach where it is digested. From the stomach, food travels to the small intestines, where digestion continues and nutrients are absorbed into the bloodstream. 1.2 The importance of fluid and nutritional balance: Eating food provides you with nutrients that are necessary for your body to function, grow, and repair its self. We need to consume six types of nutrients to sustain life: carbohydrates, protein and fat, which all provide energy, but in different forms, vitamins and minerals,
Unit 5- Anatomy and Physiology for Health and Social care P2-Outline the structure of the main tissues of the body The stomach- The stomach is a muscular organ that is located on the left side of the upper abdomen. The stomach receives all the food from the esophagus, when the food reaches the end of the oesophagus it enters the stomach through a muscular valve which is known as the lower esophagus sphincter. The stomach muscles contract periodically, churning the food to enhance digestion. Phloric sphincter is a muscular valve which opens to allow food to pass from the stomach to the small intestine. Non-striated- There is non striated muscle in the stomach, it helps the digestive system in the process of digestion of food by causing mechanical digestion due to churning action as muscles contract.