Enamel- Is the hardest substance in the body and is fairly brittle because it is heavily mineralized with calcium and salts. * The outer surface of the root is covered by a substance called cementum‚ attaches the tooth to the periodontal membrane (ligament) Dentin- a bonelike material‚ underlies the enamel and forms the bulk of the tooth. Pulp Cavity- Contains a number of structures (connective tissue‚ blood vessels‚ and nerve fibers) collectively called pulp. Root Canal- Provides
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the ventral cavity? The viscera 3. What are the main functions of these membranes and the potential space they form? To secrete serous fluid which allows the parietal membrane to slide over the visceral membrane without friction. 4. What is the clinical condition that develops when air is able to enter the potential space of the pleural membrane? Pneumothorax 5. What is the clinical condition called when the membrane of the abdominal cavity is inflamed? (hint: periton****) Peritonitis
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Chapter 25 Control of Body Temperature and Water Balance PowerPoint Lectures for Biology: Concepts & Connections‚ Sixth Edition Campbell‚ Reece‚ Taylor‚ Simon‚ and Dickey Lecture by Edward J. Zalisko Copyright © 2009 Pearson Education‚ Inc. Introduction: Chilling Out Bears sleep a lot during winter But bears do not hibernate Instead‚ they become dormant – Body temperature drops from 37°C to 31–34°C – True hibernators may cool to 30°C Dormant bears – Are easily awakened – True
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people in the United States. Crohn’s has common symptoms of a cold such as abdominal pains‚ fever‚ and diarrhea‚ it also has many more symptoms. Crohn’s can affect any part of the GI tract‚ though‚ usually occurs at the end of the small intestine (ileum) and the beginning of the large intestine (colon). Some people may ask‚ How do people get Crohn’s disease? or‚ How does someone get rid of Crohn’s disease?
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response to stimuli‚ and plasma membranes. One significant difference is that prokaryotes are without a cell nucleus and eukaryotes are cells with a membrane bound nucleus Prokaryotic falls in two taxa characteristic of organism: domain archaea and domain bacteria; however prokaryotic itself is not a taxon. Prokaryotes does not have a membrane surrounding its genetic material (DNA) they make proteins simultaneously to read their genetic code. Eukaryotes have a membrane called a nuclear envelope surrounding
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Substances will move through the membrane by diffusion. This is the random spreading out of particles until they are even. For example‚ when you put your instant coffee in boiling water‚ the coffee particles spread out and fill the entire mug‚ this is diffusion. A second way that substances can move through the cell membrane is by osmosis. This is a special type of diffusion where water moves from a high to a low concentration through a ’partially permeable membrane’‚ or a membrane specially shaped to only
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9.2 - Maintaining a Balance: 1. Most organisms are active within a limited temperature range: * Identify the role of enzymes in metabolism‚ describe their chemical composition and use a simple model to describe their specificity in substrates: * Role of enzymes in metabolism: * Metabolism refers to all the chemical reactions occurring in organisms * Enzymes are biological catalysts which increase the rate of chemical reactions * Without enzymes‚ metabolism
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can spell it correctly!!!! 13. Describe the nine regions of the abdominopelvic cavity and the four quadrants of the abdominopelvic cavity and list the major organs found within each. 14. Distinguish between visceral and parietal serous membranes‚ and differentiate between pericardial‚ pleural‚ and peritoneal varieties. 15. Name the function of serous fluid. CHAPTER 1: AN INTRODUCTION TO THE HUMAN BODY I. INTRODUCTION A. DEFINITIONS:
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Revision Questions – Nutrients Lipids 1. Lipids are made up of 3 fatty acids and a glycerol molecule‚ referred to as a triglyceride. Glycerol is an alcohol with 3 hydroxyl groups (OH). A fatty acid attaches itself to each hydroxyl group with the elimination of 3 water molecules (condensation). The fatty acids vary and determine the properties of a lipid. 2. Saturated fatty acids: * Each carbon has a full quota of hydrogen atoms. * There are no double bonds. * Solid at room
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right side of the body. c. Gallbladder—lies on posterior side of the liver. d. Pancreas—located behind the stomach‚ attached to the duodenum. 3. Contrast the composition of the four layers in the wall of the alimentary canal. a. Mucosa or mucous membrane—surface epithelium‚ underlying connective tissue‚ and a small amount of smooth muscle‚ b. Submucesa—loose connective tissue‚ glands‚ blood vessels‚ lymphatic vessels‚ and nerves. c. Muscular layer—two coats of smooth muscle tissue. d. Serosa
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