...The Digestive System and How It Works The digestive system is a unique system that has a unique way of operating. The digestive system is the organs and glands in the body that are responsible for digestion. The digestive system begins with the mouth and extends through the esophagus, stomach, small intestine, and large intestine, ending with the rectum and anus. In this paper I plan to show how the digestive system works, the organs and gland that are in the system and there functions. Most of you have heard the expression "you are what you eat. a more accurate statement would be: "you are what you eat, digest, assimilate and incorporate." Although this statement is also obviously less than complete, it does incorporate the very important...
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...describing all the major structures that we go through as well as describing what happens to the meal as it goes through the digestion process. Let’s get started. We are going to begin our journey by watching how the food is digested via the gastrointestinal pathway and the urinary pathway. Starting with the digestive system, the food will begin to be digested in the mouth where food is acted upon by saliva and enzymes like amylase (WiseGeek, Digestive System, 2012). The brain has a reflex that triggers the flow of saliva into our mouths when we see or even think of food (WiseGeek, Digestive System, 2012). There are three major salivary glands that are involved in this process: the parotid, submandibular, and sublingual glands. These glands function to secrete saliva into our mouths in order to keep it moist, lubricate and bind our food to begin the digestion process, and to maintain oral hygiene (WiseGeek, Salivary Glands, 2012). Our saliva moistens the food while our teeth chew it up and make it easier for us to swallow. As Mr. Smith swallows his food, the muscles in his tongue and mouth will move the food into his pharynx. The pharynx is divided into three parts: nasopharynx, oropharynx, and laryngopharynx (WiseGeek, Pharynx, 2012). The nasopharynx is...
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...The digestive system is a complex series of organs that process and break down the foods we eat. The 7 major types of the digestive system is the mouth, esophagus, stomach, large intestine, small intestine, rectum (also known as the colon) and the anus. These are the major categories you need to have a proper digestive system. Such as your gallbladder helps your digestive track but it is not an essential you have to have. You can have it removed and still live and digest all the things you eat. The 1st step of the 7 step digestive system is the mouth. The mouth is the beginning process where we chew our food to help break it down to better the digestion process. The saliva we secrete during the chewing process has enzymes that help the breaking down of the food (summins). When we chew we don’t think about the process the food is going for. We always as kids were taught to chew our food so we don’t choke. While this is very true there is more to chewing than just choking. The chewing helps break down the food before the enzymes and other matter can reach the food. Easier to be transformed into waste later on. The 2nd step in the digestive process is the esophagus; the esophagus is a muscular tube connecting the throat with the stomach. The esophagus is about 8 inches long, and is lined by moist pink tissue called mucosa. The esophagus runs behind the trachea (also known as the windpipe) and heart, and in front of the spine. Just before entering the stomach, the esophagus...
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...Physiology I Shemika Spraggins Kaplan University Introduction: Skeletal System and Digestive System The Human body is one the most complex organism that is made up of several systems that all work together to keep all of us alive. Amount these systems are: The skeletal System and Digestive System. The Skeletal System has two hundred and six bones that protect the body’s organs, provide central support and attachment for muscles movement throughout the body. This system plays an important function in the...
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...The mouth is at the very beginning of the digestive system. The mouth is located on your face right under your nose. I don’t think I could forget or even have to come up with a way to remember this body part because it is not an easy body part to forget and it’s where food enters and sometimes even exits, but you hope that doesn't happen really ever. The mouth is responsible for 3 different digestive mechanisms. Before we ever bit into food the very first mechanism that takes place before food ever hits our mouth is we salivate which later mixes with our food which is chemical digestion. Mechanical digestion takes place by our teeth chewing up the food and propulsion digestion also takes place by our tongue moving the food around and then down our esophagus to go through more digestion. The esophagus is roughly an 8 inch muscular tube connecting your mouth to the stomach. I would remember the esophagus just by remembering that it’s the long tube that connects the mouth to the stomach. Propulsion is the only mechanism that takes place in the esophagus. The esophagus is constructed of a bunch of tiny muscles that move the food that has been eaten in the mouth to the stomach. The pancreas lays on the right side of the abdomen behind the stomach and the narrow end extends to the left side of the body. I have a feeling I will have to make cards for the digestive system parts so I will remember that the pancreas lays across the back of the abdomen behind the stomach. The pancreas...
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...The Human Digestion Summary SCI241 September 4, 2014 Kimberly Johnson The Human Digestion Summary Before telling you what factors affect the amount of time it takes for foods to travel through the digestive tract, and how does digestion occur in each part of the digestion system, how proteins, fats, and carbohydrates break down in the digestive system, and what types of food help with digestion; I'm going to first tell you what the digestion system is and what it is made up of. Per the NDDIC (National Digestive Disease Information Clearinghouse), "Digestion works by moving food through the GI tract. Digestion begins in the mouth with chewing and ends in the small intestine. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. The body then absorbs these smaller molecules through the walls of the small intestine into the bloodstream, which delivers them to the rest of the body. Waste products of digestion pass through the large intestine and out of the body as a solid matter called stool". (NIH Publication No. 13-2681, 2013). Knowing all of that now I can tell you more about the digestion system. You may be wondering how long does it take for food to pass through your GI track; well let's just say it's up to your body on how fast it wants' to pass the intake through. Having knowledge from working in Colon and Rectal Surgery it overall take the normal person anywhere from one to three...
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...Human digestive system In the human digestive system, the process of digestion has many stages, the first of which starts in the mouth (oral cavity). Digestion involves the breakdown of food into smaller and smaller components which can be absorbed and assimilated into the body. The secretion of saliva helps to produce a bolus which can be swallowed in the oesophagus to pass down into the stomach. Saliva also contains a catalytic enzyme called amylase which starts to act on food in the mouth. Digestion is helped by the mastication of food by the teeth and also by the muscular contractions of peristalsis. Gastric juice in the stomach is essential for the continuation of digestion as is the production of mucus in the stomach. Peristalsis is the rhythmic contraction of muscles that starts along the wall of the stomach. This initially results in the production of chyme which when fully broken down in the small intestine is absorbed into theblood. Most of the digestion of food takes place in the small intestine. Water and some minerals are reabsorbed back into the blood, in the colon of the large intestine. The waste products of digestion are defecated from the anus via the rectum. Digestive system Digestive system 17th century Persia Latin Systema digestorium Components of the digestive system[edit] Digestive system There are several organs and other components involved in the digestion of food and the largest structure of the digestive system is the gastrointestinal...
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...Assignment: Human Digestion Summary Suehaydee Figueroa SCI/241 NUTRITION Professor Tiera Pack Lawyer March 21, 2013 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 start of the process starts with the mouth. The digestive process begins in the mouth. Food is partly broken down by the process of chewing and by the chemical action of salivary enzymes. These enzymes are produced by the salivary glands and break down starches into smaller molecules. On the way to the stomach: the esophagus - After being chewed and swallowed, the food enters the esophagus. The esophagus is a long tube that runs from the mouth to the stomach. It uses rhythmic, wave-like muscle movements (called peristalsis) to force food from the throat into the stomach. This muscle movement gives us the ability to eat or drink even when we're upside-down. In the stomach - The stomach is a large, sack-like organ that churns the...
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...The digestive system is the set of organs which transform whatever we eat into substances that can be used in the body for energy, growth and repair. The digestive system consists of the upper and lower alimentary tract. The upper section of the digestive system consists of the oral cavity, teeth, tongue, salivary glands, pharynx and oesophagus. The lower alimentary tract is composed of the stomach, intestines and the glands of the digestive system i.e. the liver, gall bladder and the pancreas. The glands of the digestive system are accessory organs because although food does not pass directly through them, they help the process, breaking down the toxins or waste digestion produces. There are four stages of digestion. The first stage takes place in the mouth where the action of teeth and saliva combine; chewing and partially digesting the food so that it will pass more easily along the oesophagus. Saliva contains the enzyme amylase which acts on cooked starch. The ball of food that leaves the mouth through the action swallowing is known as a bolus. The tongue pushes the bolus to the back of the mouth towards the pharynx, a muscular tube behind the mouth. The food passes into the pharynx and down to the oesophagus. In the oesophagus the chewed food is carried from the pharynx to the stomach by a muscular contraction known as peristalsis. The lining of the oesophagus secretes mucus to ease and lubricate the passage of food. The second stage of digestion takes place in the...
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...function(s) of the digestive system (2.5 pts). The major function of the digestive system is to break down food stuffs for the purpose of extracting essential nutrients, building block molecules, and water (Freeman, 856). 2. Briefly, explain the major function(s) of the cardiovascular system (2.5 pts). The major function of the cardiovascular system is to facilitate the exchange of O2 and CO2 between tissue and the environment as well as the transport of vital molecules and nutrients to all tissues (Freeman, 875). 3. Using all relevant organs and anatomical structures, trace the physical connection between the digestive and cardiovascular systems (3 pts). Once food has emptied into the stomach, secretory enzymes are released that provoke the secretion of pancreatic enzymes as well as bile. Bile emulsifies fat globules which are converted into chylomicrons; these are then absorbed into lacteals for further processing in the lymphatic system before proceeding to final processing...
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...The Digestive System and Its Activities What happens to food when it is ingested? To understand this process it is important to know how the digestive system works and its components. The digestive system is more than just the stomach and colon, rather it is a system of organs working together to break down food into “nutrient molecules, absorbing these molecules into the bloodstream, and ridding the body of the indigestible remains” (Elaine and Katja 849). The digestive system is composed of the alimentary canal, also known as the gastrointestinal tract, and its accessory digestive organs. The alimentary canal “is a muscular tube lined with epithelium [tissue] and adapted regionally to the various functions of the digestive organs” (Fritsch and Wolfgang 42). It includes the mouth, pharynx, esophagus, stomach, small intestine, and large intestine. It is in the alimentary canal where food is broken down to smaller fragments and absorbed by the bloodstream. The teeth, tongue in the mouth; and the gallbladder, salivary glands, liver, and pancreas connected by ducts to the GI tract make up the accessory digestive organs. These accessory organs release or store special secretions that aid in digestive and absorptive processes. The mouth is the entryway to the alimentary canal. In depth, the mouth, or oral cavity, is bordered by lips, cheeks, palate, and tongue. When opened anteriorly it is called the oral orifice. The mouth region contains thick stratified squamous epithelium...
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...After the thick liquid leaves the stomach, it enters the small intestine. The small intestine is part of the digestive system where most of the chemical digestion takes place. When food reaches the small intestine, it has already been mechanically digested into a thick liquid. But chemical digestion has just begun. Although starches and proteins have been partially broken down, fats haven't been digested at all. Almost all chemical digestion and absorption of nutrients takes place in the small intestine. As the liquid moves into the small intestine, it mixes with enzymes and secretions. The enzymes and secretions are produced in three different organs—the small intestine, the liver, and the pancreas. The liver and the pancreas deliver their substances to the small intestine through small tubes. The liver is located in the upper portion of the abdomen. Liver are extremely busy chemical factory that plays a role in many body processes. For example, the liver breaks down medicines and other substances, and it helps eliminate nitrogen from body. As part of the digestive system, the liver produces bile, a substance that breaks up fat...
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...UNIT 05 LO2- P4 Explain the physiology of two names body systems in relation to energy metabolism in the body. Our body requires energy so the body functions. This energy mainly comes from carbohydrates and fats that we take as food. Carbohydrates are decayed into glucose, glucose is soluble in blood. It is transported by the blood cells to various parts of the body where it reacts with oxygen in a series of steps producing carbon dioxide (CO2), water (H2O) and energy. The burning of food in the cells results in the free of energy is called respiration. Carbon dioxide and water, which are formed during respiration, are transferred through various organs of the body. The energy released in respiration fulfils the energy needs of the body. Aerobic Respiration Aerobic respiration is the process that takes place in presence of oxygen. Aerobic respiration break down molecules to get hold of bio-chemical energy and has oxygen. Molecules used by cells in aerobic respiration are glucose, amino acids and fatty acids. Glucose + Oxygen →Energy + Carbon dioxide + Water The aerobic respiration is an energy making process. During the process of aerobic respiration as many as 38 molecules of ATP are produced for every molecule of glucose that is utilized. Aerobic respiration process breaks down a single glucose molecule to yield 38 units of the energy storing ATP molecules. Anaerobic respiration. The term anaerobic means without air, which takes place without oxygen. Anaerobic...
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...The Human Digestive System Human Digestive SCI/241 Nutrition November 22, 2012 Mr. Brain Oddi By: Lenicia Ridley The Human Digestive System Human Digestion 1. How long does it take for food to go through the digestive system? Salivary glands begin the digestive process at the sight and smell of food. After, food enter the mouth and is moistened by, saliva and chewed by the teeth, it transforms into a bolus. Once the bolus leaves the mouth, it moves into the pharynx where it can be swallowed. The bolus then moves from the pharynx into the esophagus, which connects the pharynx to the stomach. Once the bolus reaches the stomach, it is mixed with acid secretions to transform the bolus into chime, a semiliquid food mass. Food is partially digested into the stomach, and chime usually empties from the stomach in 2 to 6 hours. This timeframe is determined by the size and type of meal ingested. 2. How does digestion occur...
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...Assignment 3 Body Systems and their role in Energy Metabolism and The Inter-relationship between Body Systems Anatomy and Physiology for Health and Social Care Assignment 3 Body Systems and their role in Energy Metabolism and The Inter-relationship between Body Systems “Explain the physiology of two named body systems in relation to energy metabolism in your body” Cardiovascular system The cardiovascular system has many different functions. The four major functions are to transport nutrients, gases and waste products around the body, to protect the body from infection and blood loss, to help the body maintain a constant body temperature and to help the body maintain fluid balance. It has many different structures within the cardiovascular system too. The main structures include the heart, the blood vessels and the blood. The heart is the key organ in the circulatory system. Its main function is to propel blood throughout the body. It usually beats from 60 to 100 times per minute but it can go much faster during exercise. There are three types of blood vessels which are the arteries, veins, and capillaries. Energy metabolism is generally defined as the entirety of an organism's chemical processes. These chemical processes are categorized as being either catabolic or anabolic. Energy is needed in order for our body to be able to function. Energy helps break down molecules and to build new molecules. The cardiovascular system transports the oxygen...
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