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Digestive System Essay

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digestive system
D I G E S T I V E S Y S T E M O V E R V I E W : On ...
The digestive system consists of many different organs that digest food to create energy for the human body. The first stage of digestion begins with the mouth. Food is first taken in through the mouth. The mouth contains different type of teeth, which help break up the food. We have teeth that cut ant rip food such as carnivores and teeth that are flat, which grind food like herbivores. Within the mouth, the tongue helps
Digestive System
D I G E S T I V E S Y S T E M O V E R V I E W : On this page you will ...
mix the food with saliva. Three pairs of salivary glands secrete saliva into the mouth. Saliva contains amylase, which starts to break down the starch in the food into free sugars. The saliva also lubricates and moistens the food so it can be swallowed and travel down the esophagus with little resistance. The esophagus is a tube that connects the mouth to the stomach. The lower two-thirds of the esophagus is wrapped in smooth muscle,
Digestive System
On this page you will learn about the Digestive System, which break down foods in to smaller pieces, so they can be used as an energy source for the body. ...
which cause peristalsis, rhythmic waves of muscular contractions that move the food to the stomach. The bottom of the esophagus has a muscular ring called a sphincter that closes the esophagus from the stomach and prevents acids to flow up the esophagus. The first major organ of digestion is the stomach. The main functions of the stomach are temporary storing the food, mechanical breakdown of the food and the unraveling of proteins. The stomach collects ingested
The Digestive System
Every living human cell needs oxygen and nutrients to survive. The oxygen and nutrients gives the cells energy containing molecules and raw materials necessary for growth, repair, and reproduction and ...
food, digests some of the proteins, and sends its contents to the primary digestive organ, the small intestines, in a controlled fashion. The stomach
Digestive System
DIGESTIVE SYSTEM The process of breaking down food into molecules the body can use is called digestion. Digestion occurs in the alimentary canal, or digestive tract. This organ begins at ...
Digestive System
Digestive System The human body uses various kinds of food for energy and growth. To be used, however, food must be changed into a form that can be carried through ...
The Digestive System
The digestive system is a group of organs that perform the process by which food, containing nutrients, is eaten and broken down into different components. This breakdown makes it possible ...
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