Download or read book Regulation of Ventilation and Gas Exchange written by Donald Davies and published by Elsevier. This book was released on 2012-12-02 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: Regulation of Ventilation and Gas Exchange is a comprehensive account of the regulation of ventilation and gas exchange. Topics covered include central nervous system regulation of ventilation; ventilatory response to muscular exercise; respiratory control in air-breathing ectotherms; and breathing during sleep. Hydrogen ion homeostasis of the cerebral extracellular fluid is also discussed, along with specific mechanisms for O2 and CO transport in the lung and placenta. Comprised of nine chapters, this book begins with an overview of the neural elements that modify and/or are intrinsic to the respiratory rhythm. The next two chapters deal with the contribution of metabolic factors in the control of ventilation, paying particular attention to the importance of metabolic factors during muscular exercise and the specific role of ammonia in the regulation of respiration. A view of ventilatory control from a comparative standpoint, stressing both adaptive and mechanistic phenomena, is then presented. Subsequent chapters explore the regulation of breathing during sleep; regulation of cerebral extracellular fluid acid-base composition and its role in the control of ventilation and cerebral blood flow; carrier-mediated transport of respiratory gases; and measurement of ventilation-perfusion ratios is presented. The last chapter considers lung surfactant mechanics and addresses issues such as in vitro vs in situ measurements of surface tension and the effects of surface tension on pulmonary vascular resistance and interstitial pressure. This monograph is designed not only for respiratory physiologists but also for students and researchers in other areas with an inclination toward respiratory physiology.
Download or read book Regulation of Tissue Oxygenation Second Edition written by Roland N. Pittman and published by Biota Publishing. This book was released on 2016-08-18 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt: This presentation describes various aspects of the regulation of tissue oxygenation, including the roles of the circulatory system, respiratory system, and blood, the carrier of oxygen within these components of the cardiorespiratory system. The respiratory system takes oxygen from the atmosphere and transports it by diffusion from the air in the alveoli to the blood flowing through the pulmonary capillaries. The cardiovascular system then moves the oxygenated blood from the heart to the microcirculation of the various organs by convection, where oxygen is released from hemoglobin in the red blood cells and moves to the parenchymal cells of each tissue by diffusion. Oxygen that has diffused into cells is then utilized in the mitochondria to produce adenosine triphosphate (ATP), the energy currency of all cells. The mitochondria are able to produce ATP until the oxygen tension or PO2 on the cell surface falls to a critical level of about 4–5 mm Hg. Thus, in order to meet the energetic needs of cells, it is important to maintain a continuous supply of oxygen to the mitochondria at or above the critical PO2 . In order to accomplish this desired outcome, the cardiorespiratory system, including the blood, must be capable of regulation to ensure survival of all tissues under a wide range of circumstances. The purpose of this presentation is to provide basic information about the operation and regulation of the cardiovascular and respiratory systems, as well as the properties of the blood and parenchymal cells, so that a fundamental understanding of the regulation of tissue oxygenation is achieved.
Download or read book Concepts and Formalizations in the Control of Breathing written by G. Benchetrit and published by Manchester University Press. This book was released on 1987 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pulmonary Gas Exchange written by G. Kim Prisk and published by Biota Publishing. This book was released on 2013-08-01 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: The lung receives the entire cardiac output from the right heart and must load oxygen onto and unload carbon dioxide from perfusing blood in the correct amounts to meet the metabolic needs of the body. It does so through the process of passive diffusion. Effective diffusion is accomplished by intricate parallel structures of airways and blood vessels designed to bring ventilation and perfusion together in an appropriate ratio in the same place and at the same time. Gas exchange is determined by the ventilation-perfusion ratio in each of the gas exchange units of the lung. In the normal lung ventilation and perfusion are well matched, and the ventilation-perfusion ratio is remarkably uniform among lung units, such that the partial pressure of oxygen in the blood leaving the pulmonary capillaries is less than 10 Torr lower than that in the alveolar space. In disease, the disruption to ventilation-perfusion matching and to diffusional transport may result in inefficient gas exchange and arterial hypoxemia. This volume covers the basics of pulmonary gas exchange, providing a central understanding of the processes involved, the interactions between the components upon which gas exchange depends, and basic equations of the process.
Download or read book Anatomy and Physiology written by J. Gordon Betts and published by . This book was released on 2013-04-25 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiology of Respiration written by Michael P. Hlastala and published by Oxford University Press. This book was released on 2001-03-08 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This lucid, well-illustrated textbook presents the basic physiological principles governing the function of the respiratory system. It was developed as a working text with problem-solving exercises, many lucid drawings, simple mathematical development, and clinical correlations. The book's scope is comprehensive, covering pulmonary anatomy and microstructure, mechanics, gas exchange, neural control, and integrative aspects of respiration.
Download or read book Ventilation blood Flow and Gas Exchange written by John Burnard West and published by . This book was released on 1965 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Respiratory Control written by F.S. Grodins and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fourth Oxford Conference entitled "Control of Breathing: A Model ing Perspective" was held in September of 1988 at Grand Lake, Colorado. Grand Lake, also called Spirit Lake, was chosen for the fourth meet i ng so as to continue the meditative atmosphere of the previ ous meetings and to put the conference on a new higher plane (8,500 feet). The weather, as promised, exhibited its random-like rain showers. The snow report became essential for traveling the 12,000 foot passes to and from Grand Lake. Even the servi ces such as telephone and elect ri city proved to be uncertain. In all, the overall atmosphere of Spirit Lake contributed to an uninhibited free-style of presentation and interaction. All of us who attend the Oxford Conferences share a common interest in exploring respiratory control and the regulation of breathing. Modeling has become an adjunct to our exploration process. For us, models are tools that extend our ability to conceptualize just as instruments are tools that extend our ability to measure. And so these meetings attract physicians, physiologists, mathematicians and engineers who are modelers and modelers who are engineers, mathematicians, physiologists and physicians. Four of these physician-modelers have now passed away. They have been very important mentors for many of us. J. W. Bellville was my Ph.D. dissertation advisor at Stanford who introduced me to the intrigue of respiratory control. G. F. Filley was my colleague at the University of Colorado who enhanced my thinking about respiratory control. E. S.
Download or read book Medical Ventilator System Basics a Clinical Guide written by Yuan Lei and published by Oxford University Press. This book was released on 2017 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Medical Ventilator System Basics: A clinical guide is a user-friendly guide to the basic principles and the technical aspects of mechanical ventilation and modern complex ventilator systems. Designed to be used at the bed side by busy clinicians, this book demystifies the internal workings of ventilators so they can be used with confidence for day-to-day needs, for advanced ventilation, as well as for patients who are difficult to wean off the ventilator. Using clear language, the author guides the reader from pneumatic principles to the anatomy and physiology of respiration. Split into 16 easy to read chapters, this guide discusses the system components such as the ventilator, breathing circuit, and humidifier, and considers the major ventilator functions, including the control parameters and alarms. Including over 200 full-colour illustrations and practical troubleshooting information you can rely on, regardless of ventilator models or brands, this guide is an invaluable quick-reference resource for both experienced and inexperienced users.
Download or read book Anatomy Physiology written by Lindsay Biga and published by . This book was released on 2019-09-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A version of the OpenStax text
Download or read book Back to Basics in Physiology written by Juan Pablo Arroyo and published by Academic Press. This book was released on 2013-03-20 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: This original six chapter book will briefly review and integrate the basic concepts behind water distribution and movement in the body. This fills a knowledge gap that most medical and undergraduate physiology students acquire when these topics are studied separately. As of now, there is no textbook that fully integrates renal, cardiovascular and water physiology in a clear understandable manner. The book is intended primarily for medical students and undergraduate physiology students. Chapters include: 1) Water and its Distribution; 2) Water Dynamics; 3) Fluid Handling by the Heart and Blood Vessels; 4) Fluid Handling by the Kidneys; 5) Water and Oxygen Delivery; 6) Integration in the Response to Hemorrhage, Volume Depletion, and Water Redistribution. An easy-to-read, step by step explanation of how water is distributed, how it moves, how this aides in oxygen delivery and how this is regulated in the human body Presents a complex and detailed topic in an original way that will allow students to understand more complex textbooks and explanations
Download or read book Physiological Strategies for Gas Exchange and Metabolism written by A. J. Woakes and published by Cambridge University Press. This book was released on 1991-03-28 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 1991 book reviews the various metabolic and functional mechanisms that animals possess in order to live successfully in their own particular, often unique, environments. It demonstrates both the diversity of responses that are shown and the underlying principles of gas exchange and transport for a wide range of organisms.
Download or read book Studies on the Control of Ventilation and Pulmonary Gas Exchange During Exercise written by Brian J. Whipp and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Control of Breathing During Exercise written by Susan A. Ward and published by Biota Publishing. This book was released on 2014-07-01 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The control of breathing during exercise remains the source of considerable debate. Classical schemes of the exercise hyperpnea have incorporated elements of proportional feed-back from chemoreceptor sites (carotid body and brainstem) and feed-forward neurogenic (central command and muscle reflex) control. However, the precise details of the control process are still not fully resolved, reflecting in part technical and interpretational limitations inherent in isolating putative control mechanisms in the intact exercising human and also the challenges presented by the ventilatory and gas-exchange complexities encountered at work rates which engender a metabolic (lactic) acidosis. Although some combination of neurogenic, chemoreflex, and circulatory-coupled processes are likely to contribute to the control, intriguingly, the overall system appears to evidence considerable redundancy. This, coupled with the lack of appreciable steady-state error signals in the mean levels of arterial PCO2, PO2, and pH over a wide range of work rates, has motivated the formulation of innovative control models that reflect not only spatial interactions but also temporal interactions (i.e., short-term and longer-term ‘memory’). The challenge remains to discriminate between robust control schemes that (a) integrate such processes within plausible physiological equivalents, and (b) account for both the dynamic and steady-state system response over the entire range of exercise intensities. Table of Contents: Introduction / Ventilatory Requirements / Ventilatory Responses / Ventilatory Control / Conclusions / References
Download or read book Cardio Respiratory Control in Vertebrates written by Mogens L. Glass and published by Springer Science & Business Media. This book was released on 2009-07-24 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hopefully, this book will be taken off of the shelf frequently to be studied carefully over many years. More than 40 researchers were involved in this project, which examines respiration, circulation, and metabolism from ?sh to the land vertebrates, including human beings. A breathable and stable atmosphere ?rst appeared about 500 million years ago. Oxygen levels are not stable in aquatic environments and exclusively water-breathing ?sh must still cope with the ever-changing levels of O 2 and with large temperature changes. This is re?ected in their sophisticated count- current systems, with high O extraction and internal and external O receptors. 2 2 The conquest for the terrestrial environment took place in the late Devonian period (355–359 million years ago), and recent discoveries portray the gradual transitional evolution of land vertebrates. The oxygen-rich and relatively stable atmospheric conditionsimpliedthatoxygen-sensingmechanismswererelativelysimpleandl- gain compared with acid–base regulation. Recently, physiology has expanded into related ?elds such as biochemistry, molecular biology, morphology and anatomy. In the light of the work in these ?elds, the introduction of DNA-based cladograms, which can be used to evaluate the likelihood of land vertebrates and lung?sh as a sister group, could explain why their cardio-respiratory control systems are similar. The diffusing capacity of a duck lung is 40 times higher than that of a toad or lung?sh. Certainly, some animals have evolved to rich high-performance levels.
Download or read book The Respiratory System E Book written by Caroline R Thomas and published by Elsevier Health Sciences. This book was released on 2022-06-04 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Systems of the Body series has established itself as a highly valuable resource for medical and other health science students following today’s systems-based courses. Now thoroughly revised and updated in this third edition, each volume presents the core knowledge of basic science and clinical conditions that medical students need, providing a concise, fully integrated view of each major body system that can be hard to find in more traditionally arranged textbooks or other resources. Multiple case studies help relate key principles to current practice, with links to clinical skills, clinical investigation and therapeutics made clear throughout. Each (print) volume also now comes with access to the complete, enhanced eBook version, offering easy anytime, anywhere access - as well as self-assessment material to check your understanding and aid exam preparation. The Respiratory System provides highly accessible coverage of the core basic science principles in the context of clinical case histories, giving the reader a fully integrated understanding of the system and its major diseases. Introduction Structure and function of the respiratory system Elastic properties of the respiratory system Airflow and resistance in the respiratory system Pulmonary Ventilation Diffusion of Gases between air and blood The Pulmonary Circulation Carriage of gases by the blood and acid/base balance Nervous control of breathing Chemical control of breathing Lung function tests Systems of the Body Series: The Renal System The Musculoskeletal System The Nervous System The Digestive System The Endocrine System The Respiratory System The Cardiovascular System
Download or read book Handbook of Blood Gas Acid Base Interpretation written by Ashfaq Hasan and published by Springer Science & Business Media. This book was released on 2013-03-29 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Blood Gas/Acid-Base Interpretation, 2nd edition, simplifies concepts in blood gas/acid base interpretation and explains in an algorithmic fashion the physiological processes for managing respiratory and metabolic disorders. With this handbook, medical students, residents, nurses, and practitioners of respiratory and intensive care will find it possible to quickly grasp the principles underlying respiratory and acid-base physiology, and apply them. Uniquely set out in the form of flow-diagrams/algorithms charts, this handbook introduces concepts in a logically organized sequence and gradually builds upon them. The treatment of the subject in this format, describing processes in logical steps makes it easy for the reader to cover a difficult- and sometimes dreaded- subject rapidly.
