Content (Digestive System) Group No.4 Submitted By: Castro‚Cendrix Paolo‚Christian Tolentino‚Athea Submitted to: Prof.Josephine Tondo Faculty-in-charge I.Description of the system Your digestive system is uniquely constructed to perform its specialized function of turning food into energy. Each step in digestion requires energy‚ and thus imposes an “overhead charge” on the energy made available from absorbed substances The major part of digestion takes place in the
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place within the body through the cell membranes. Although these are freely passable to the diffusing molecules providing the barrier are thin. In the lungs there are two simple squamous epithelial cells which separates the dissolved gases in the alveoli from the blood in the pulmonary capillaries. No source of energy is required for diffusion of molecules. See diagram of diffusion below Some of the materials which diffuse through the cell membrane by a related process are known as facilitated
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DIGESTION Cooking vs. Digestive Processes Cooking Processes: Grilling Microwaving Frying Roasting Barbeque Boiling Steaming Poaching Digestive Processes: Ingestion Propulsion Mechanical digestion Chemical digestion Absorption Defecation Salivary Digestion SALIVARY DIGESTION Salivary Glands the salivary glands are a collection of accessory organs surrounding the mouth that secrete a fluid called saliva. Saliva consists of 99.5 % water and 0.5 % solutes. medium for dissolving
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opens into the large intestine. “The intestines process about 2.5 gallons of food‚ liquids and bodily waste every day.” (Inner Body) There are three features that the small intestines have that allow it to be so absorptive. The first feature is the mucosal folds. The inside of the intestine is not flat‚ it is in circular folds that allow for more surface area and helps regulate the flow of the digested food. The second feature is the villi. These are tiny finger-like projections from the folds that
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The esophagus is unique from the rest of gastrointestinal tract ‚normally there are no eosinophils in the esophagus[15].The mechanism of dysphagia in EoE is multifactorial ‚including mucosal stickness ‚esophageal fibrosis‚strictures and ring formation [4].Eosinophils produce and release many proteins and mediators‚particularly major basic protein(MBP)‚eosinophilic cationic protein(ECP)‚eosinophil-derived neurotoxin (EDN) and eosinophilic
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tract. A. mucosa; inner surface for the secretion of digestive end products. B. submucosa: site of glands‚ blood vessels‚ lymph vessels and nerve plexuses. C. muscularis: circular and longitudinal muscles for propulsion and mixing. D. serosa: serous membrane to reduce friction with movement. 2. Where along the GI tract is the muscularis composed of skeletal tissue? Is control of this skeletal muscle‚ voluntary? A. mouth‚ pharynx‚ super4ior and middle parts if the esophagus and external anal sphincter
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Carbohydrates Primary energy source Molecules of C‚ H‚ O • Sugars ~ simple carbohydrates • Starches ~ complex carbohydrates • Fiber Sources: Rice‚ potatoes‚ sugar etc. Role of Fats Provide energy/stores energy Absorb vitamins Make up cell membranes Sources: oil‚ cheese‚ butter and other milk product. Vitamins Organic (contain carbon) Growth Regulate body functions Prevent disease No food has all vitamins Water soluble Fat soluble Sources: Vitamins are organic molecules.
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Introduction The specialty of the Ear‚ Nose and Throat (ENT) system is relatively young compared to certain medical practices. Even to function as a unified discipline‚ pioneers of the specialty had to wage a protracted struggle to surmount considerable hindrances. Initially confined to managing ear infections alone‚ the introduction of surgical intervention skills gradually led the specialty to adapt a unified approach. Furthermore‚ with improved technological advances‚ the specialty’s horizon
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A and P II Chapter 24 practice test 1. Which of the following digestive regions is responsible for the propulsion of materials into the esophagus? Answer: pharynx 2. The active process that occurs when materials enter the digestive tract via the mouth is: Answer: ingestion 3. Sympathetic stimulation of the muscularis externa promotes: Answer: muscular inhibition and relaxation 4. Which of the following statements about peritonitis is false? Answer: It leads to inflammation of the digestive mucosa
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PATHOPHYSIOLOGY OF PEPTIC ULCER DISEASE Definition: Peptic ulcer disease is an excavation (hollowed-out area) that forms in the mucosal wall of the stomach. Erosion of a circumscribed area of mucous membrane is the cause. Predisposing Factors Precipitating Factors ➢ Age (40-60) > Malignant tumors ➢ Gender > Gastric Hyperacidity
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