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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?
32.2 Digestive System Sponge Word Bank Anus Esophagus Gallbladder Large Intestine Liver Mouth Pancreas Salivary Glands Rectum Small Intestines Stomach.
32.2 Digestive System Sponge #8 Word Bank Anus Esophagus Gallbladder Large Intestine Liver Mouth Pancreas Salivary Glands Rectum Small Intestines Stomach.
Stomach Small Intestine Large Intestine Pharynx Esophagus Liver Gall Bladder Pancreas Oral cavity. DIGESTIVE SYSTEM Mouth Esophogus Liver Anus Stomach Pancreas Large intestine Small intestine Rectum Salivary Glands. Your digestive system has three main functions The Digestive System digestion absorption elimination.
Mouth Esophagus Stomach Small Intestiine Large Intestine Rectum Salivary Glands Liver Gallbladder Pancreas Amylase (enzyme) breaks down starch into. Lesson 6 Digestive System AIM : How does the digestive system work to maintain a stable and healthy body? The digestive system is the body system that breaks down food into nutrients that can be used by the body. M ECANISME DE REGULATION ? Centre de regulation (= nature du message envoye) : ? Hormonale ? muscles, glandes Via endocrinocytes ? hormones = SANG !!!
M ECANISME DE REGULATION ? Reponse finale : ? = somme de toutes les actions produites par les effecteurs ? La reponse peut … Annuler le stimulus de depart ou … Amplifier le stimulus de depart Module 1 - Systeme digestif 8 La reponse finale effectue une retroaction (positive ou negative) sur le stimulus de depart. PHYSIOLOGIE DIGESTIVE L’appareil digestif Constitue : Le tube digestif = Des cavites segmentees par des sphincters Les organes annexes (ceux qui interviennent. DIGESTION… Digestion is the process of mechanically and chemically breaking down foods and absorbing the breakdown products. GENERAL CHARACTERISTICS OF THE ALIMENTARY CANAL *The alimentary canal is a muscular tube that passes through the bodys ventral cavity. SALIVARY GLANDS *salivary glands secrete saliva, which moistens food, helps bind food particles, begins chemical digestion of carbohydrates, makes taste possible, and helps cleanse the mouth.
STOMACH *the stomach receives food, mixes it with gastric juice, initiates protein digestion, carries on a limited amount of absorption, and moves food into the small intestine.
STOMACH *a layer of thick mucus is produced by cells in the stomachs inner lining…this protective coating prevents the stomach from digesting itself.
Introduction Digestion refers to the mechanical and chemical breakdown of foods so that nutrients can be absorbed by cells. DIGESTIVE SYSTEM M echanical and chemical breakdown of foods and the absorption of the resulting nutrients by cells. Presentation on theme: "1 Anatomical and physiological features of the digestive system in children. 20 Gathering complains (Pain in the abdomen) It is necessary to distinguish the following signs: 1.
35 Grotts method of palpation (pancreas) The fist of the left hand is placed under the join.
24-11 Lips and Cheeks Both structures important in mastication and speech Lips (labia): orbicularis oris muscle within. 24-20 Swallowing (Deglutition) Three phases –Voluntary: bolus of food moved by tongue from oral cavity to pharynx. 24-27 Cephalic Phase The taste or smell of food, tactile sensations of food in the mouth, or even thoughts of food stimulate the medulla oblongata.


24-30 Movements in Stomach Combination of mixing waves (80%) and peristaltic waves (20%) Both esophageal and pyloric sphincters are closed. Les glandes salivaires La salive humidifie les aliments et les prepare pour avalerLa salive humidifie les aliments et les prepare pour avaler nettoie la bouche nettoie la bouche amylase aide a digerer glucides amylase aide a digerer glucides Les six glandes salivaires secretent plus d’un litre de salive par jour! Par Asmaa Meloua et William Lucas Ecole Joseph-Francois Perrault, Montreal, juin 2001 Validation du contenu et revision linguistique: Leila Touta Science. Chapitre V LES FONCTIONS DE NUTRITION I- La digestion II- La respiration III- Lexcretion IV- La circulation. Probleme du chapitre : Comment l'approvisionnement de l'organisme en nutriments se fait-il ?
L’estomacIntestin grele Gros intestin Site de la digestion Le tractus gastro- intestinal de l’homme Flore bacterienne normale du tractus gastro-intestinal.
Cavite buccale Glandes salivaires les aliments ?sophage passent par Estomac chaque segment Duodenum et subissent Foie pancreas Intestin grele une. 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. Martin was shot in the stomach and treated by William Beaumont, an army surgeon The bullet had left a small hole in his stomach Beaumont persuaded St. DIGESTION – THE PROCESS THAT BREAKS FOOD INTO SMALL MOLECULES SO THEY CAN BE ABSORBED OR TAKEN INTO BODY CELLS. Overview of the digestive system There are three main functions of the digestive system: There are three main functions. 3 main functions – Digestion – Absorption – Elimination 2 main divisions – Alimentary canal Tube from mouth to anus – Accessory organs. Nutrients… Are substances in food that provide energy and materials for cell development, growth, and repair. Functions of the Digestive System -Ingestion -Take food into body -Digestion -Mechanical -Physical breakdown of food. DIGESTIVE SYSTEM Includes mouth, pharynx, esophagus, stomach, small intestine and large intestine; several major glands. Digestive System a coiled, muscular tube (6-9 meters long) beginning with the mouth and ending with the anus. CARACTERISTIQUES GENERALES Oesophage Estomac Gros intestin Forme du : Bouche Pharynx Intestin grele Rectum et anus tube digestif Dents. DIGESTION… Digestion is the process of mechanically and chemically breaking down foods and absorbing the.
Different regions carry out different functions, but certain structural characteristics are similar throughout its length. Introduction Digestion refers to the mechanical and chemical breakdown of foods so that nutrients can be absorbed. Organs of the alimentary Canal Mouth Pharynx Esophagus Stomach Small intestine Large intestine * Salivary glands, liver, pancreas and. Function & Organization Function The breakdown of food into small enough particles to be absorbed Organization.


Pancreatic islets (endocrine) (1%) cells secrete insulin and glucagon to control blood sugar B. Chemical digestion requires large surface area so breaking down large particles mechanically facilitates chemical digestion. Innermost layer, consisting of mucous epithelium (stratified squamous in mouth, oropharynx, esophagus and anal canal), simple columnar epithelium in the rest of the tract.
Parasympathetic action potentials are carried by the vagus nerves to the stomach, where enteric plexus neurons are activated. L’intestin se divise en deux parties: Le petit intestin ou intestin grele Le petit intestin ou intestin grele Le gros. Role du systeme digestif On ingere de la nourriture pour obtenir les nutriments necessaire pour: construire et reparer les tissus. Introduction Lappareil digestif a pour fonction de decomposer les aliments en substances simples pouvant. Atelier n°1 : le trajet des aliments glandes salivaires oesophage foie estomac pancreas intestin grele gros intestin anus. 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. Epithelial cells at the tips of villi are exfoliated and replaced by mitosis in crypt of Lieberkuhn.
Digestion—process of altering the physical state and chemical composition of food so that the body’s cells. Postganglionic neurons stimulate secretion by parietal and chief cells (HCl and pepsin) and stimulate the secretion of the hormone gastrin and histamine.
FIN FONCTION ? Assure la transfomation des aliments en nutriments grace aux enzymes digestives. Les systemes constituent des groupes d’organes dont les activites sont coordonnees pour accomplir une fonction precise. Mechanical: teeth chew food Chemical: enzymes in saliva break down starches What three organs aide the small intestine with digestion?
Sympathetic input inhibits muscle contraction, secretion, and decrease of blood flow to the digestive tract. Parotid duct crosses over masseter, penetrates buccinator, and enters the oral cavity adjacent to the 2 nd upper molar –Submandibular: mixed, but more serous than mucous.
Soft palate elevates, upper esophageal sphincter relaxes, elevated pharynx opens the esophagus, food pushed into esophagus by pharyngeal constrictors successive contraction from superior to inferior.
Gastrin is carried through the circulation back to the stomach where it and histamine stimulate further secretion of HCl and pepsin. Gallbladder, liver, and pancreas If you ate a meal of spaghetti and meatballs, where would digestion of the pasta begin?
A wave of circular smooth muscle relaxation moves ahead of the bolus of food or chyme allowing the digestive tract to expand. In the root, dentin is covered by cellular bone-like structure that helps hold tooth in the socket. Epiglottis is tipped posteriorly due to pressure of the bolus, larynx elevated to prevent food from passing into larynx.
Then a wave of contraction of the circular smooth muscles behind the bolus of food or chyme (ingested food & stomach secretions) propels it through the digestive tract.
Pulp cavity filled with blood vessels, nerves, and connective tissue Periodontal ligaments: hold tooth in socket.
Absorption: move organic molecules, electrolytes, vitamins, water from gut to interstitial fluid, lymph, blood 7. Stretching of esophagus causes enteric NS to initiate peristalsis of muscles in the esophagus.



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