Infection of the Gall-Bladder in Relation to Pernicious Anemia
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Physiology H Digestive
2/28/18 Introduction • Provides processes to break down molecules into a state easily used by cells - A disassembly line: Starts at the mouth and ends Digestive System at the anus • Digestive functions are initiated by the parasympathetic division Chapter 29 - Digestion occurs during periods of low activity - Produces more energy than it uses Copyright © 2016 by Elsevier Inc. All rights reserved. 1 Copyright © 2016 by Elsevier Inc. All rights reserved. 2 Anatomy The Digestive System • Oral cavity • Pharynx • Esophagus • Stomach • Small intestine and large intestine • Accessory organs: Pancreas, liver, and gallbladder From Herlihy B: The human body in health and illness, ed 4, St. Louis, 2011, Saunders. Copyright © 2016 by Elsevier Inc. All rights reserved. 3 Copyright © 2016 by Elsevier Inc. All rights reserved. 4 Physiology Gastrointestinal Tract • Ingestion: Taking materials into mouth by • Muscular tube throughout digestive system eating/drinking • Accessory organs and glands secrete • Digestion: Breaking down food into molecules substance to aid in digestion that can be used by the body • GI tract wall has four layers: - Includes mechanical and enzymatic action - Mucosa • Absorption: Simple molecules from the - Submucosa gastrointestinal (GI) tract move into the - Muscle layer: Responsible for peristalsis bloodstream or lymph vessels and then into - Serosa body cells • Defecation: Eliminating indigestible or unabsorbed material from the body Copyright © 2016 by Elsevier Inc. All rights reserved. 5 Copyright © 2016 by Elsevier Inc. All rights reserved. 6 1 2/28/18 Peristalsis Oral Cavity • First portion of GI tract • Contains: - Teeth - Tongue - Openings for salivary glands From Thibodeau GA, Patton KT: Anatomy & physiology, ed 6, St. -
Pocket Atlas of Human Anatomy
Pocket Atlas of Human Anatomy Founded by Heinz Feneis Bearbeitet von Wolfgang Dauber Neuausgabe 2006. Taschenbuch. 568 S. Paperback ISBN 978 3 13 511205 3 Format (B x L): 12,5 x 19 cm Weitere Fachgebiete > Medizin > Vorklinische Medizin: Grundlagenfächer > Anatomie Zu Inhaltsverzeichnis schnell und portofrei erhältlich bei Die Online-Fachbuchhandlung beck-shop.de ist spezialisiert auf Fachbücher, insbesondere Recht, Steuern und Wirtschaft. Im Sortiment finden Sie alle Medien (Bücher, Zeitschriften, CDs, eBooks, etc.) aller Verlage. Ergänzt wird das Programm durch Services wie Neuerscheinungsdienst oder Zusammenstellungen von Büchern zu Sonderpreisen. Der Shop führt mehr als 8 Millionen Produkte. 148 Alimentary System Stomach and Small Intestine 149 1 Serosa; Serous coat. Peritoneal covering con- 21 Circular layer; Short pitch helicoidal layer. sisting of simple squamous epithelium. B Inner circular muscle layer. Its cells are coiled 2 Subserosa; Subserous layer. Connective tissue tightly in a helicoidal form. F underlying the serosa. B 22 Circular folds. (Kerckring’s valves). Up to 8 mm 12 3 Muscular layer; Muscular coat. Muscular coat high permanent folds containing submucosa 13 of stomach composed of muscle fibers running that extend transversely to the intestinal axis, 3 encircling around two-thirds of the intestinal in three directions. A B 7 14 lumen. E F 4 Longitudinal layer. External layer of longitu- 23 Submucosa. Sliding layer between the muscu- dinal muscle fibers mainly at the lesser and 9 greater curvatures of stomach. A B laris mucosae and the muscular coat consisting mainly of collagenous connective tissue and 5 15 5 Circular layer. Middle layer consisting of containing vessels and nerves. -
The Digestive, Reproductive, and Urinary Systems
The Digestive, Reproductive, and Urinary Systems THE DIGESTIVE SYSTEM Your body is constantly using energy, even when you’re at rest. Your cells use energy to carry out the normal functions of protein synthesis, cell maintenance and repair, and their own particular functions. On a larger scale, processes such as breathing, pumping of the heart, maintenance of normal levels of substances within the body, and digestion and absorption of foods are vital to life. All these processes continue while you’re sleeping. Because your body can’t man- ufacture energy, it must obtain that energy from elsewhere. In all animals, energy comes from food. Food also provides the body with fresh raw materials for growth, maintenance, and repair of body structures. The digestive system deals with the intake, physical breakdown, chemical digestion, and absorption of food, along with the elimination of waste products created by this process. The digestive system also eliminates certain toxic substances and secretes hormones it uses to regulate itself. The Oral Cavity The mouth, or oral cavity, consists of the lips, teeth and gums, tongue, oropharynx, and the associated salivary glands. The lips are a zone of transition from the skin of the face to the mucous membrane (a general term denoting the surface of an organ lubricated by moisture) lining the gums and the inside of your cheeks. Several layers of muscle help the lips grab and retain food and water within the mouth. 1 Different animals have different degrees of lip muscle devel- opment. Grazing animals like cattle, sheep, and horses have muscular lips that are prehensile (i.e., adapted to grasp plant material). -
Comparative Vertebrate Anatomy and Phylogeny
Tested Studies for Laboratory Teaching Proceedings of the Association for Biology Laboratory Education Volume 40, Article 13, 2019 Comparative Vertebrate Anatomy and Phylogeny 1 2 3 4 Joslyn Mills , Melissa LaBonty , Nafis Hasan , and Angela Seliga 1Brown University, Molecular Biology, Cell Biology, and Biochemistry Department, 185 Meeting St., Providence RI 02912 USA 2University of Alabama at Birmingham, Cell, Developmental, and Integrative Biology, 1900 University Blvd, Birmingham AL 35294 USA 3Tufts University, Sackler School of Graduate Biomedical Studies, 136 Harrison Ave, Boston, MA 02111 USA 4Boston University, Department of Biology, 590 Commonwealth Ave, Boston, MA 02215 USA ([email protected]; [email protected]; [email protected]; [email protected]) Comparative vertebrate anatomy is typically taught over a full semester, but this lab condenses this learning experience into a 3 to 6-hour lab that exposes students to numerous vertebrates and touches on evolution. This lab is designed to explore various body systems that differentiate the six common groups of vertebrates. Students will hypothesize the evolution of these groups from their common ancestor by drawing a phylogenetic tree. This lab has flexibility so that it can be condensed to fit into a shorter time frame, expanded upon to lengthen the lab, or to divide each module as a free-standing activity. Keywords: Vertebrate, comparative, bone structure, internal anatomy, dissection each group. The final module allows the students to Introduction hypothesize the evolution of these groups from their common ancestor by drawing a phylogenetic tree, placing each group along a branch depending on the presence (or Comparative vertebrate anatomy is typically absence) of a trait they identified in the previous modules. -
Gastrointestinal Tract in Health: Basic Anatomy and Physiology- Esophagus and Stomach Gastrointestinal Tract
Gastrointestinal Tract in Health: Basic Anatomy and Physiology- Esophagus and Stomach Gastrointestinal Tract Esophagus Liver Stomach Gallbladder Large intestine Pancreas Small intestine Digestive Organs Digestive Tract Digestion • Breakdown of food into smaller components • Allows the body to absorb the nutrients and minerals in food • Necessary for growth, metabolism, body maintenance, and reproduction Mechanisms of Digestion Mechanical Chemical • Mastication • Saliva • Peristalsis • Gastric acid • Segmentation • Bile • Pancreatic enzymes Process of Digestion 1. Motility • Muscular movements of the GI tract • Peristalsis – propels food forward via contractions • Segmentation – mixes food with simultaneous contraction Motility Peristalsis Segmentation Process of Digestion 1. Motility - Muscular movements of the GI tract - Peristalsis – propels food forward via contractions - Segmentation – mixes food with simultaneous contractions 2. Secretion - Release of acid/enzymes to mix with food 3. Absorption - Nutrients and water absorbed by GI tract into blood Journey Through Digestion Mouth Esophagus Stomach Liver Small Intestine Pancreas Gallbladder Large Intestine Mouth • Chewing mechanically breaks down food • Presence of food stimulates saliva production • Tongue helps to arrange food bolus for swallowing Saliva • Produced by salivary glands in mouth Parotid gland • Moistens food to assist in swallowing Sublingual gland • Amylase – initiates carbohydrate digestion Submandibular gland • Antibacterial effect Gastrointestinal Tract Esophagus -
Digestive System
ANATOMIC DRAWINGS OF THE DIGESTIVE SYSTEM Esophageal sphincter Liver (left lobe) Esophagus Stomach Liver (right lobe) Greater curvature Intrahepatic bile duct Common bile duct Pancreas Gallbladder Splenic flexure Duodenum Jejunum Hepatic flexure Ascending colon Ileum Descending colon Ileocecal valve Cecum Appendix Sigmoid colon Rectum Anus THE ALIMENTARY CANAL Lesser omentum Stomach Liver Nodes of greater omentum Greater omentum LESSER AND GREATER OMENTUM 62 SEER Summary Staging Manual - 2000 ANATOMIC DRAWINGS OF THE DIGESTIVE SYSTEM Transverse colon Hepatic flexure Splenic flexure Ascending colon (“right colon”) Descending colon (“left colon”) Rectum Small intestines: (duodenum, jejunum, and ileum) Anus THE INTESTINES SEER Summary Staging Manual - 2000 63 DIGESTIVE SYSTEM SITES TABLE OF ANATOMIC STRUCTURES PRIMARY SITE SUB- OUTSIDE THE SUB- MUSCU- SEROSAL SEROSA3 MUCOSA MUCOSA LARIS TISSUES1 SEROSA2 Epi- Lamina Muscu- thelium Propria laris Esophagus Yes B Yes Yes Yes Yes See note 4. No See note 4. (C15. ) A Stomach Yes Yes Yes Yes Yes No Yes Greater and S (C16. ) lesser omentum E Sm. Intestine Yes Yes Yes Yes Yes No Yes Mesentery of (C17. ) M small intestine Colon (C18._) Yes E Yes Yes Yes Yes Yes : : .0 Cecum Yes N Yes Yes Yes Yes Yes Yes : : .1 Appendix Yes T Yes Yes Yes Yes Yes Yes : : : .2 Ascending Yes M Yes Yes Yes Yes No See note 5. : Mesenteric or .3 Hepatic flex. Yes E Yes Yes Yes Yes Yes Yes pericolic fat : .4 Transverse Yes M Yes Yes Yes Yes Yes Yes : : .5 Splenic flex. Yes B Yes Yes Yes Yes Yes Yes : : .6 Descending Yes R Yes Yes Yes Yes No See note 5.