Preview

The Stomach

Good Essays
Open Document
Open Document
5753 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
The Stomach
ARMY PUBLIC SCHOOL, KIRKEE

Project Report
On
Human Digestive organ- Stomach

Submitted by-
Name-
Roll no-
Class-
Division-

TABLE OF CONTENTS

* THE STOMACH…………………………………………….…………….……………………………………..3 * FUNCTIONS OF STOMACH……………………………………………………………...…………………3 * THE DIVISIONS OF STOMACH………………………………………………………..………………….4 * THE LAYERS OF THE STOMACH…………………..………………………………….………………..5 * PROCESS OF DIGESTION…………………………………..………………………………………………7 * Mechanical digestion……………………………………………………………………………..7 * Chemical digestion…………………………………………………………………………………8 * PHASES OF DIGESTION…………………………………………………………..………………………11 * Cephalic phase…………………………………………………………….………………………11 * Gastric phase……………………………………………………………………………………….12 * Intestinal phase……………………………………………………………………………………13 * DUODENUM…………………………………………………………………………...………………………14 * GASTRIC EMPTYING…………………………………………………………….…………………………15 * SOME STOMACH CONDITIONS AND DISEASES………………………………………………..16

THE STOMACH

The stomach is a muscular sac that lies between the esophagus and the small intestine in the upper abdomen. The stomach is not the only part of your digestive system that absorbs food but rather is a part of the digestive system and important for churning food into a consistency that is easier to digest for the rest of your intestines.

FUNCTIONS OF STOMACH * The stomach is J-shaped and it can expand to temporarily store food. * Partial digestion of the food takes place here. The churning action of the stomach muscles physically breaks down the food. * The stomach releases acids and enzymes for the chemical breakdown of food. The enzyme pepsin is responsible for protein breakdown. * The stomach releases food into the small intestine in a controlled and regulated manner.
Chewed food passes from the esophagus into the stomach; the flow is somewhat regulated by the esophageal sphincter but more importantly depends on how fast you eat and if you are eating
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Good Essays

    Sci/241 Human Digestion Paper
    • 251 Words
    • 2 Pages

    Sci/241 Human Digestion Paper

    The beginning of the digestive process starts with the smell and sight of food which activate the salivary glands. The mouth is the point at which food enters the digestive tract and continues the digestive process by chewing food. The food is then broken down into pieces and moistened by salivary glands which turn food into a bolus. The bolus goes down the pharynx into the esophagus which connects the pharynx to the stomach. The stomach is an organ that mixes food and secretes gastric juice. The bolus, once in the stomach, is mixed into a semiliquid mass called chime. The stomach is close together with the liver and pancreas but does not get assistance from these organs. The chime then enters…

    • 251 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    digestion week SCI/241 Week 7 Essay Example
    • 483 Words
    • 2 Pages

    digestion week SCI/241 Week 7 Essay Example

    When a human sees or smells food the salivary glands are the first thing to react in the digestive system. Once the food is placed into the mouth, it is then taken over by the teeth, tongue, and saliva. These three are what help make the food moist and small enough to be swallowed. At this point the food then becomes what is called bolus. The bolus is then traveled through the pharynx then esophagus, and into the stomach. When the food travels through the pharynx, the epiglottis makes sure that the food paces by the without interring the lungs. Once the bolus enters the stomach, it is then broken down even further by the acids within the stomach. The bolus becomes a little more digested before leaving the stomach. Once the food is at this stage, it is then called Chyme. Chyme is a semiliquid food. It normally leaves the stomach within two to six hours. The small intestine is what does most of the digesting and takes the nutrients from the food. It has help from the liver, pancreas, and gallbladder. The small intestine is made up of three parts, these parts are called, the jejunum, the ileum, and the duodenum. Anything that is not taken for nutrients in the small intestine goes to the large intestine. At this time it travels through what is called the sphincter. The sphincter prevents any of the food to go back into the small…

    • 483 Words
    • 2 Pages
    Good Essays
    Read More
  • Good Essays

    Biology Study guide Chapter 38
    • 896 Words
    • 4 Pages

    Biology Study guide Chapter 38

    18. In the stomach, hydrochloric acid makes to contents of the stomach extremely acidic. Pepsin breaks proteins into smaller pieces and it works best under the acidic conditions present in the stomach. The combination of these two begins the process of protein digestion.…

    • 896 Words
    • 4 Pages
    Good Essays
    Read More
  • Good Essays

    Buccal Cavity Research Paper
    • 664 Words
    • 3 Pages

    Buccal Cavity Research Paper

    The glands in the stomach lining produce stomach acid, called gastric acid, and an enzyme that digests protein. The pancreas produces a juice containing several enzymes that break down carbohydrates, fats, and proteins in food. The pancreas delivers digestive juice to the small intestine through small tubes called ducts.…

    • 664 Words
    • 3 Pages
    Good Essays
    Read More
  • Better Essays

    Chloe's Story
    • 536 Words
    • 3 Pages

    Chloe's Story

    The proteins would be flushed out of the body quicker than usual with the high vulnerability of malabsorption. Normally, pepsin begins the enzymatic digestion of the ingested proteins; they linger in the stomach longer than most of the ingested food with the end result of gastric protein digestion is a chyme of mostly polypeptides and some free amino acids to be absorbed in to the body. Pancreatic Protease digests protein in the basic environment of the small intestine.…

    • 536 Words
    • 3 Pages
    Better Essays
    Read More
  • Good Essays

    A&P II Notes
    • 530 Words
    • 3 Pages

    A&P II Notes

    5. If a food bolus does not make it all the way to the stomach, secondary peristalsis forces the bolus the remainder of the way.…

    • 530 Words
    • 3 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    U7 Task 1
    • 528 Words
    • 5 Pages

    U7 Task 1

    The stomach is a muscular organ, found in the abdominal cavity, which churns food into smaller particles and starts the digestion of proteins. It is part of the digestive system.…

    • 528 Words
    • 5 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Unit 5 P3 Btec Level 3 Health and Social Care
    • 1077 Words
    • 5 Pages

    Unit 5 P3 Btec Level 3 Health and Social Care

    Stomach is associated with digestive system; the stomach's main function is digestion. It does this by:…

    • 1077 Words
    • 5 Pages
    Good Essays
    Read More
  • Powerful Essays

    Explain How The Cardiovascular And The Digestive System Interrelate To Perform Energy Metabolism
    • 1610 Words
    • 7 Pages

    Explain How The Cardiovascular And The Digestive System Interrelate To Perform Energy Metabolism

    Some digestive organs also release juices that contain enzymes. These are special chemicals that speed up processes in the body and which, in the digestive tract, break down substances in food. Digestive enzymes turn large food molecules into small food molecules that are absorbed into your…

    • 1610 Words
    • 7 Pages
    Powerful Essays
    Read More
  • Good Essays

    Digestion: Describe the digestion of a burger
    • 362 Words
    • 1 Page

    Digestion: Describe the digestion of a burger

    When the burger reaches the stomach, the epithelium, or stomach wall, secretes gastric juice which has a very high concentration of hydrochloric acid and breaks up the burger. In the gastric juice is also an enzyme that hydrolyzes proteins called pepsin. This pepsin starts out as the inactive pepsinogen, and is activated by hydrochloric acid in the epithelium. After this, the burger is churned in the stomach and becomes chyme, or vomit.…

    • 362 Words
    • 1 Page
    Good Essays
    Read More
  • Satisfactory Essays

    bio short essay
    • 471 Words
    • 2 Pages

    bio short essay

    Once I have taken a bite out of my delicious favorite meal, the digestive system gets to work. It all begins in the mouth, chewing the food small enough to swallow. Salvia is squirted into the food to moisten and soften the food. Salvia contains enzymes, which break down the starches in food. Once the tongue forms the food into a ball to be swallowed, it is sent down the pharynx. The pharynx contains sphincters that help keep your food down once you swallow. Next, it makes its way to the esophagus, which is simply a transportation tube from the mouth to the stomach. It then reaches the stomach, which uses chemicals to make the food particles tinier. These chemicals are called gastric juices and include hydrochloric acid and enzymes. Once the stomach mixes with the chemicals, it is formed into a cream-like liquid called chyme. The gallbladder takes over from here hitting the food with more chemicals, one of them called bile. Bile is mixed with our food breaking down the fat into droplets, which will supply us with energy later on. From there, the pancreas uses digestive juice to break down…

    • 471 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Better Essays

    Two Systems That Work Together
    • 1303 Words
    • 6 Pages

    Two Systems That Work Together

    Now that you have broken down the food your tongue helps move your food to the back of your mouth. In this process the food moves to the start of the Esophagus. When the food that is ready to be farther digested your (Esophagus closes the passage ways leading to your lungs so the food goes to the stomach.)(www.gesa.org) When the food travels down the Esophagus to your stomach, (the sphincter valve that naturally stays closed opens to allow the food to enter the stomach.)(www.gesa.org)…

    • 1303 Words
    • 6 Pages
    Better Essays
    Read More
  • Powerful Essays

    The digestive system
    • 5068 Words
    • 21 Pages

    The digestive system

    Chemical breakdown results from the action of digestive enzymes and other chemicals acting on food as it passes through the GI trac…

    • 5068 Words
    • 21 Pages
    Powerful Essays
    Read More
  • Satisfactory Essays

    Extended Feeding Techniques
    • 513 Words
    • 2 Pages

    Extended Feeding Techniques

    every part of the gastrointestinal tract is designed to help in the digestive process in a specific way. The mouth is involved in chewing also know as masticating. The purpose is to break down food into small enough pieces to pass through the esophagus and enter the stomach. The food is moistened with saliva helping turning it into bolus in order to turn initiate the digestion of food. The esophagus is a tube like muscle which use contractions to pass food from the mouth into the stomach it does not help with the digestive or absorptive function. The stomach acts like a sort of storage depot for food, but also acts as a place in which mechanical and chemical breakdown of food happens. The small intestine absorbs water, electrolytes, proteins, fats and carbohydrates. Whereas the large intestine is where the food matter and water that can’t be absorbed is the formed into stools. The rectum is a temporary storage area for feces before passed.…

    • 513 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Good Essays

    Fantastic Voyage Unit 9
    • 1364 Words
    • 6 Pages

    Fantastic Voyage Unit 9

    Digestion begins in the mouth. A brain reflex triggers the flow of saliva when we see or even think of food. Saliva moistens the food while the teeth chew it up and make it easier to swallow. Amylase, which is the digestive enzyme, found in saliva, starts to break down starch into simpler sugars before the food even leave the mouth. The nervous pathway involved in salivary excretion requires stimulation of receptors in the mouth, sensory impulses to the brain stem and parasympathetic impulses to salivary glands. Swallowing his food happens when the muscles in his tongue and mouth move the food into his pharynx. The pharynx, which is the passage way for food and air, a small flap of skin called the epiglottis closes over the pharynx to prevent food from entering the trachea and causing choking. For swallowing to happen correctly a combination of 25 muscles must all work together at the same time. After being chewed and swallowed the food enters the esophagus or gullet is the muscular tube in vertebrates through which ingested food passes from the throat to the stomach. It connects the pharynx, which is the body cavity that is common to both the digestive and respiratory systems behind the mouth, with the stomach, where the second stage of digestion is initiated. 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…

    • 1364 Words
    • 6 Pages
    Good Essays
    Read More

Related Topics