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ESOPHAGUS A long tube that travels from the mouth to the stomach BOLUS: moisten ball of food Food travels down to the stomach by a process called PERISTALSIS, which is a series of muscle contractions and relaxations.
STOMACH Can hold about 1 L of food Does both mechanical and chemical digestion Contains a chemical called HYDROCHLORIC ACID The acid kills any microbes that may be in the food.
LARGE INTESTINE The location of the absorption of water and any other nutrients that the body may need.
ACCESSORY ORGANS There are organs that help the digestive system, but are not actively involved in digestion. Components Esophagus Esophagus Stomach Stomach Small Intestine Small Intestine Large Intestine Large Intestine Gall bladder Gall bladder Liver Liver Pancreas.
Introduction The digestive system is used for breaking down food into nutrients which then pass into the circulatory system and are taken to where they. Digestion Chapter 13 The chemical and mechanical process of breaking down food to release nutrients in a form your body can absorb for use.
The Digestive System Organs AIM: How do the organs of the Digestive System aid in the maintenance of homeostasis?
Homeostasis Homeostasis is often referred to as a Dynamic Equilibrium - a state of stability within Fluctuating limits. Homeostasis and Feedback Systems Mechanisms that make adjustments to bring the body back within an acceptable range are referred to as Negative Feedback Systems (the process by which a mechanism is activated to restore conditions to their original state) Ex. Messages and the Nervous System Endocrine glands - Secrete chemical messengers called Hormones directly into the bloodstream.
Types of Hormones Non-target - general hormones that affect many cells throughout the body Ex.
Nervous & Endocrine Along with the nervous system, the endocrine system provides integration and control of the organs and tissues to maintain homeostasis. Tropic (Releasing) Hormones Hormones that are released from the hypothalamus and pituitary gland are known as tropic hormones, because they target other endocrine glands and stimulate endocrine glands to release other hormones. The Pancreas and Hormones The pancreas is located behind the stomach and is attached to the small intestine. Diabetes Treatment - Transplantation Islet cells are transplanted to the diabetics pancreas Required to take immunosuppressive drugs (life-long) Complicated procedure, requires many pancreases to do one transplant Have had a good success rate at U of A medical centre.
Website of the Telegraph Media Group with breaking news, sport, business, latest UK and world news. The digestive system is the system of the body that mechanically and chemically breaks down food.
Click here for an animation that provides an overview of the digestive system organs and function. The mouth, pharynx, and superior and middle parts of the esophagus, and anus contain skeletal muscle.
The lower part of the esophagus and the rest of the GI tract contain 2 or 3 layers of smooth muscle. Has a nerve plexus here that controls the frequency and strength of contraction of smooth muscle. Adventitia = areolar connective tissue with dispersed collagen and elastic fibers (retroperitoneal organs, e.g. Click here for an animation that reviews how enzymes (such as sucrase) can break down foods (such as a disaccharide). Is the pinching of the intestine into compartments and subsequent mixing of undigested materials with intestinal secretions.
The motor neurons mostly control GI tract motility (movement), particularly the frenquency and strength of contraction of the muscularis. The neurons of the NS can function independently, but are subject to regulation by the neurons of the autonomic nervous system. The visceral smooth muscle networks of the GI tract show rhythmic cycles of activity in the absence of neural stimulation. Click here for an animation that reviews the anatomy of the liver, the functions of the liver, and the structure of liver lobules. Net osmosis occurs whenever a concentration gradient is established by active transport of solutes into the mucosal cells.
Next, heartburn affects many people today and most people do not even know why they are having the heartburn in the first place.
As a nurse in the ER, I personally can say that 90% of abdominal pain or discomfort is related to the evil monster, known as “Constipation”. Also another educational fact that most are unaware of is the effects of smoking on the GI system. Now that diet and lifestyle have been addressed for prevention purposes, screening and tests also can be used to aid in prevention of many GI disorders.
Many of these screenings are used today to help aid in the prevention of cancer or life threatening disorders. Ultimately, it may seem that the GI system has less importance on the human body as opposed to the heart, lungs, or brain but after being educated, it is proven that the human body is an amazing piece of science that links every system to one another; one not being able to properly function without the other. GERD (Gastroesophageal reflux disease), is a condition in which the liquid content of the stomach regurgitates into the esophagus. Treatment of GERD includes lifestyle changes, diet changes, and medications such as proton pump inhibitors. Diverticulitis occurs when one or more diverticula in your digestive tract become inflamed or infected.
Research has shown that these foods aren’t associated with an increased risk of diverticulits.
Symptoms of diverticulitis include severe pain located in the left lower side of the abdomen, fever, diarrhea, constipation, bloating, nausea and vomiting, and bleeding from the rectum. Symptoms of crohn’s disease include persistent diarrhea, rectal bleeding, urgent need to move the bowels, abdominal cramps and pain, sensation of incomplete evacuation, and constipation.
Celiac disease, also known as gluten intolerance, is a genetic disorder that affects at least 1 in 133 Americans. Currently there are two main diagnostic tools available for celiac disease: biopsy and serological (antibody) tests.
The digestive system is very complicated but important to understand from a medical standpoint.
Now that all the enzymes has been addressed and their functions explained, one can truly understand how complex and fascinating the digestive system is and how it works. Before beginning your assessment, educate the patient and family about why a physical assessment will be performed, what to expect during and after the procedure and any follow-up testing that may be necessary.
Normally the nose should be symmetric, midline, and in proportion to other facial features.
With a light observe the oval rough surfaced tonsils- the color should be pink, with some indentations or crypts. During the assessment of the gastrointestinal system thorough examination of the mouth, abdomen, and rectum should be obtained.  The examiner should try and examine the patient in a private, quiet, warm, and well-lit room, explaining the techniques that will be used. During examination of the abdomen a sequence is used including inspection, auscultation, percussion, and palpation.
During auscultation of the abdomen the examiner should lightly place the stethoscope diaphragm in the right lower quadrant, slightly below and to the right of the umbilicus.
Percussion is used directly or indirectly to detect the size and location of abdominal organs and air or fluid in the abdomen, stomach, or bowel.
Palpation helps to determine the size, shape, position, and tenderness of major abdominal organs.
In order to obtain an accurate health history regarding the GI system, appropriate questions need to be asked with terms the patient will understand. Also, be sure to ask about past abdominal surgeries or trauma (Lippincott and Wilkins, 2010). When obtaining the patients current health history, ask the patient if they are taking any medications, allergies to medications or foods, changes in appetite or diet, difficulty chewing or swallowing, and changes in bowel habit such as constipation, diarrhea, rectal bleeding, or dark stools. Enjoy this entertaining youtube Video to help you better understand our GI system– Why Digestion is important? A health history of the patient will first be obtained and then exploration of the GI tract will begin. Organs of the Digestive System mouthrectum esophagusanus stomachpancreas small intestinegall bladder large intestineliver.

The digestive system A one way tube which includes the mouth, pharynx, esophagus, stomach, small intestine and large intestine. Digestive System a coiled, muscular tube (6-9 meters long) beginning with the mouth and ending with the anus The main role. Body’s Organization Groups of organs work together in an Organ system The organs systems work together to maintain. Introduction ? The digestive system is used for breaking down food into nutrients which then pass into the circulatory system and. Digestive System Purpose: to break down the food we eat into nutrients so the body can use the nutrients to build and nourish. The Digestive System Purpose of the Digestive system: Breaks down food into substances that cells can absorb and use. Digestion – the process that breaks down food into small molecules that can be absorbed and moved into. The digestive system is a group of organs that work together to digest food so that it can be used by the body The digestive tract. Physical and Chemical Digestion Digestion is: the process by which nutrients are broken down into simple molecules that. The Digestive System The digestive tract is a series of hollow organs joined in a tube from the mouth to.
In addition to secreting digestive enzymes, the pancreas secretes the hormones insulin and glucagon into the bloodstream. Blood CO2 levels increase during exercise 1.Chemical receptors in the brainstem are stimulated.
Hormones – chemicals (in very small amounts) that target cells and set into motion specific regulatory responses. Epinephrine, Insulin Target hormones - can only bind to specific tissues, called target tissues Ex. Lipid-soluble Lipid-soluble hormones cross the membrane and interact with the genes inside the cell – Steroid hormones - made from cholesterol, soluble in fat, not water Ex. Content from the Daily Telegraph and Sunday Telegraph newspapers and video from Telegraph TV. For our final posting, education and prevention of GI disorders is the topic of conversation! The air you swallow while gum chewing may cause gas, and sorbitol causes flatulence in some people. If milk products give you gas, try cutting back on how much of them you eat or drink to see if the symptoms go away. Changing a diet can be a major fix for someone with heartburn and with a little education, one will find it is not that difficult to work around. Walking 30 to 45 minutes a day won’t just help with your constipation, it will also improve your mood and your fitness level. Yes, everyone knows the smoking is linked to heart and lung problems but do not associate it with the GI tract…and it is. A test that is similar to a fecal occult blood test, but does not require any restrictions on diet or medications prior to the test. A diagnostic procedure that allows the doctor to examine the inside of a portion of the large intestine. A procedure that allows the doctor to view the entire length of the large intestine, and can often help identify abnormal growths, inflamed tissue, ulcers, and bleeding.
A procedure that uses computerized tomography (CT) to examine the colon for polyps or masses using special technology.
A test used to check the stool or fecal matter for specific changes in DNA (the genetic blueprint of each cell) that indicate signs of colorectal cancer.
A fluid called barium (a metallic, chemical, chalky liquid used to coat the inside of organs so that they will show up on an X-ray) is administered into the rectum to partially fill up the colon. If a patient is determined a high risk factor, then some of screenings will be completed prior to the age of 50. The GI tract is well known for digestion but as previously discussed there are far more functions that just ridding the body of waste.
To help with GERD at night elevate the upper body for sleep to prevent reflux liquid from traveling up to the esophagus. Diverticula are small, bulging pouches that can form anywhere in the digestive system including the esophagus, small intestine, stomach, and large intestine. Patients may never know they have these pouches because they seldom cause problems such as diverticulitis. When the symptoms improve high fiber foods such as whole grains, vegetables, and fruits can be added to the diet.
Diet and stress may aggravate crohn’s disease but they do not cause the disease on their own. Each patient’s situation is different and treatments vary from medications, altering diet and nutrition, and sometimes surgical procedure to repair or remove affected portions of your GI tract. The pancreatic duct joins the common bile duct at the small intestine adding enzymes to aid in digestion. Obstruction of the common bile duct with gallstones can sometimes be relieved by endoscopic retrograde sphincterotomy (ERS) following endoscopic retrograde cholangiopancreatography (ERCP). The small villi in the intestines are what suck up all the nutrients from the enzymes breaking down the food we digest.
With the understanding of the enzymes, we can better address certain issues that everyday people have with digestion and help educated every to healthy and happy stomach and digestive system. Use developmentally appropriate terminology when communicating with children or adolescents.
Inspect the nose for any deformity, asymmetry, inflammation, or skin lesions (Jarvis, 2011).
During direct percussion the examiner should strike their hand or finger directly against the patient’s abdomen. If the patient has any of these complaints during a health history assessment, you want to make sure you ask the patient the location, quality, onset, duration, frequency, and severity of each symptom (Lippincott and Wilkins, 2010). Some medications such as anti-inflammatory medications, aspirin, antibiotics, and opioids can cause nausea, vomiting, and other GI symptoms. Ask the patient if anyone in their family has had any type of GI disorder such as ulcerative colitis, colorectal or gastric cancer, peptic ulcers, alcoholism, Crohn’s disease, or celiac disease. The gastrointestinal system, also known as the GI Tract is responsible for converting food consumed into nutrients needed to sustain life along with ridding the body of its waste. This blog group will educate and review the complete anatomy of the GI system, assessment of the GI system, along with diseases and disorders such as, food intolerance, dysphagia, and ulcers. Some team members will be responsible for helping aid in the visual aspect while others will be responsible for explaining the issues. O Digestion involves: O Breaking down of food into smaller pieces O The mixing of food O Movement through.
Digestion involves: Breaking down of food into smaller pieces Breaking down of food into smaller pieces The. The release of insulin into the blood lowers the level of blood glucose (sugar) by allowing glucose to enter the body cells, where it is metabolized. 2.Nerve cells from the brain then carry impulses to effector muscles, which increase the depth and rate of breathing. Pituitary, Thyroid, Parathyroid, Pancreas, Adrenal, Gonads (testes, ovaries) No hormones secretes into body cavity or externally uses ducts or tubes Ex. Caffeine, colas, and alcoholic beverages can actually dehydrate you and make constipation worse. It involves placing a very small amount of stool on a special card, which is then sent to a laboratory.
A short, flexible, lighted tube called a sigmoidoscope is inserted into the intestine through the rectum.
It involves inserting a colonoscope, a long, flexible, lighted tube, in through the rectum up into the colon. The patient is required to save an entire bowel movement and the sample is sent to a laboratory. The alimentary students hope that this blog has open its reader’s eyes to whole new world on the term “GUT” and what it means to listen to your “gut instinct”.

GERD also occurs less frequently when patients lie on their left side instead of their right side.
These foods to avoid are peppermint, chocolate, alcohol, fatty foods, spicy foods, carbonated beverages, and caffeinated drinks. Diverticula usually develop when naturally weak places in your colon give way under pressure.
If more severe symptoms occur that puts the bowel at risk for obstruction or peritonitis hospitalization may be necessary for intravenous antibiotics. The inflammation of the intestine can “skip” leaving normal areas in between patches of diseased intestine.
Data from blood studies suggest that about 1% or so of North Americans have celiac disease. Gliadin and glutenin are found in wheat, hordein in barley, secalin in rye, avenin in oats, zein in corn and oryzenin in rice.
Retrieved April 2, 2014 from National Institute of Diabetes, Digestive, and Kidney Disease. Other causes of cholecystitis include bile duct problems and tumors.  If left untreated, cholecystitis can lead to serious complications, such as a gallbladder that becomes enlarged or that ruptures.
The human body is one amazing complex and to understand how every system works is very important. Let’s create a scenario: You are about to eat a meal that contains a steak, mashed potatoes, and a warm roll. Now anatomy and physiology explains to us that the next place for the food to stop is the stomach. The equipment needed for the assessment of the nares would include an Otoscope with short, wide-tipped nasal speculum attachment, penlight, two tongue blades, cotton gauze pad, and gloves. Test the patency of the nostrils by pushing each nostril wing shut with your finger while asking the patient to sniff inward. To help with the assessment the examiner should visualize the abdominal structure in four quadrants (Schilling McCann, 2010).
Next observe the abdominal shape and contour, the abdomen should be flat to rounded in average weight individuals, slightly concave in slender individuals, and may protrude with obesity, pregnancy, ascites, or abdominal distention.
Bowel sounds should be high-pitched, gurgling noises caused by air mixing with fluid during peristalsis. During indirect percussion the examiner should use their middle finger of their dominant hand or a percussion hammer to strike a finger resting on the patient’s abdomen. First start with the perianal area, don gloves and spread the buttocks to expose the anus and surrounding tissue. When asking the patient questions, listen to the patient’s verbal responses, observe the patients body language and nonverbal responses, inquire about the patient’s perception of their health status, and let the patient voice his or her fears or concerns about their health or signs and symptoms they may be having. Patient’s that use laxatives over an extended period of time may start to develop constipation.
Our team known as the “Alimentary Students” will fully explain in detail each and every aspect of the GI tract along with major diseases and disorders that could affect the patient. Smoking is linked to heartburn, peptic ulcers, liver disease, Crohn’s disease and diseases of the colon, gallstones, and cancer to the GI tract (Digestive Health, n.d ).
Screenings are used to help aid in the diagnosis or prevention of colon cancer and other life threatening disorders. The colonoscope allows the doctor to see the lining of the colon, remove tissue for further examination, and possibly treat some problems that are discovered.
Virtual colonoscopy is noninvasive, although it requires a small tube to be inserted into the rectum to pump air into the colon.
In the past doctors thought that nuts, seeds, popcorn, and corn played a role in causing diverticulitis by getting trapped in the diverticula pouches.
Crohn’s is a chronic disease so patient’s may experience periods when the disease flares up and causes symptoms followed by periods of remission.
In the past weeks, our blog has explained the functions of the GI system but this week we are going to focus on the small, unpopular functions also known as the GI enzymes. View each nasal cavity with the person’s head erect and then with the head tilted back (Jarvis, 2011).  Using your thumbs palpate the frontal sinuses by pressing up and under the eyebrows, and over the maxillary sinuses below the cheekbones (Jarvis, 2011). Inspect the mouth and jaw for asymmetry and swelling, check the patient’s bite for malocclusion. The examiner should then assess the umbilicus which should be inverted and located midline in the abdomen. Using firm pressure, the examiner should listen with the bell of the stethoscope over the aorta and renal, iliac, and femoral arteries for bruits, venous hums, and friction rubs (Schilling McCann, 2010).
The examiner should begin percussion in the right lower quadrant and proceed clockwise, covering all four quadrants. Palpate using standard techniques such as putting the fingers of one hand close together, depress the skin about 1.5cm with your fingertips, make gentle, rotating movements, and avoid short, quick jabs. The examiner should check for fissures, lesions, scares, skin tags, inflammation, discharge, rectal prolapse, and external hemorrhoids.
If the patient is having difficulty voicing their concerns, have them complete a questionnaire or write down questions they wish to have answered ( Morrissey, 1994). Inquire about the patients home environment, such as if they are exposed to any GI symptoms in the home, food and exercise habits, oral hygiene, recent life changes and stress levels, and alcohol, caffeine, and tobacco use (Lippincott and Wilkins, 2010) ( Jarvis, 2012). Plastic Surgical Nursing: Officical Journal of the American Society of Plastic and Reconstructive Surgical Nurses, 14 (1), 27.
A complete picture of the GI tract will be outlined by the group with visual, auditory, and examinations to prove understanding of the system. A great shopping tip is to only grocery shop on the outer perimeter and avoid the center isles. At the age of 50 most men and women are sent for many tests by their family medical doctor to determine baseline and risk factors for diseases.
A primary bowel resection or bowel resection with colostomy may be necessary of a perforation, abscess, fistula, or recurring diverticulitis is occurring.
The gluten in wheat, rye, and barley contain amino acid sequences harmful to patients with celiac disease. The skin surrounding the area should be smooth and uniform in color, noting any dilated veins abdominal movement and pulsations (Schilling McCann, 2010). The abdomen should be soft and nontender noting any organs, masses, and areas of tenderness or resistance. Discussion of radiographic tests such as CT scans and X-rays will be explained to help aid in diagnosis.  Also discussion of how the GI tract can be linked to other diseases such as Pernicious Anemia will educate the fellow classmates on the importance of the GI tract.
The examiner should note any bleeding, ulcerations, carious, loose, missing, or broken teeth. The examiner should never palpate a rigid abdomen because peritoneal inflammation may be present. The examiner should rotate finger clockwise and then counterclockwise to palpate as much of the rectal wall as possible. Dyspnea (10%) irritation of the diaphragm (resulting from inflammation) pleural effusion ARDS. Assess the tongue, the examiner should check for coating, tremors, swelling, and ulcerations noting any unusual breath odors.
Dullness is heard over solid organs, such as the liver, kidneys, or feces-filled intestines (Schilling McCann, 2010).
As the examiner removes their finger they should inspect the glove for stool, blood, and mucous. Examine the pharynx by pressing a tongue blade firmly down on the middle of the tongue and ask the patient to say “Ahh.” The examiner should look for uvular deviation, tonsillar abnormalities, lesions, plaque, and exudate (Schilling McCann, 2010).
Then test and fecal matter adhering to the glove for occult blood using a guaiac test (Schilling McCann, 2010).

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