When Blood Flows

Author : Roland N. Pittman
Publisher : Biota Publishing
Page : 117 pages
File Size : 49,9 Mb
Release : 2016-08-18
Category : Medical
ISBN : 9781615047215

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Regulation of Tissue Oxygenation, Second Edition by Roland N. Pittman Pdf

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.

Author : Marilyn J. Cipolla
Publisher : Biota Publishing
Page : 82 pages
File Size : 54,9 Mb
Release : 2016-07-28
Category : Medical
ISBN : 9781615047239

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The Cerebral Circulation by Marilyn J. Cipolla Pdf

This e-book will review special features of the cerebral circulation and how they contribute to the physiology of the brain. It describes structural and functional properties of the cerebral circulation that are unique to the brain, an organ with high metabolic demands and the need for tight water and ion homeostasis. Autoregulation is pronounced in the brain, with myogenic, metabolic and neurogenic mechanisms contributing to maintain relatively constant blood flow during both increases and decreases in pressure. In addition, unlike peripheral organs where the majority of vascular resistance resides in small arteries and arterioles, large extracranial and intracranial arteries contribute significantly to vascular resistance in the brain. The prominent role of large arteries in cerebrovascular resistance helps maintain blood flow and protect downstream vessels during changes in perfusion pressure. The cerebral endothelium is also unique in that its barrier properties are in some way more like epithelium than endothelium in the periphery. The cerebral endothelium, known as the blood-brain barrier, has specialized tight junctions that do not allow ions to pass freely and has very low hydraulic conductivity and transcellular transport. This special configuration modifies Starling's forces in the brain microcirculation such that ions retained in the vascular lumen oppose water movement due to hydrostatic pressure. Tight water regulation is necessary in the brain because it has limited capacity for expansion within the skull. Increased intracranial pressure due to vasogenic edema can cause severe neurologic complications and death.

Author : Marc Thiriet
Publisher : Springer Science & Business Media
Page : 468 pages
File Size : 52,7 Mb
Release : 2007-12-20
Category : Science
ISBN : 9780387748498

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Biology and Mechanics of Blood Flows by Marc Thiriet Pdf

This authoritative book presents the basic knowledge and state-of-the-art techniques necessary to carry out investigations of the cardiovascular system using modeling and simulation. This volume contains chapters on anatomy, physiology, continuum mechanics, as well as pathological changes in the vasculature walls including the heart and their treatments. Methods of numerical simulations are given and illustrated in particular by application to wall diseases.

Author : Michitoshi Inoue,Masatsugu Hori,Shoichi Imai,Robert M. Berne
Publisher : Springer Science & Business Media
Page : 330 pages
File Size : 51,8 Mb
Release : 2013-11-09
Category : Medical
ISBN : 9784431683674

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Regulation of Coronary Blood Flow by Michitoshi Inoue,Masatsugu Hori,Shoichi Imai,Robert M. Berne Pdf

Research centering on blood flow in the heart continues to hold an important position, especially since a better understanding of the subject may help reduce the incidence of coronary arterial disease and heart attacks. This book summarizes recent advances in the field; it is the product of fruitful cooperation among international scientists who met in Japan in May, 1990 to discuss the regulation of coronary blood flow.

Author : Yuping Wang
Publisher : Biota Publishing
Page : 126 pages
File Size : 47,9 Mb
Release : 2017-06-23
Category : Medical
ISBN : 9781615047512

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Vascular Biology of the Placenta by Yuping Wang Pdf

The placenta is an organ that connects the developing fetus to the uterine wall, thereby allowing nutrient uptake, waste elimination, and gas exchange via the mother's blood supply. Proper vascular development in the placenta is fundamental to ensuring a healthy fetus and successful pregnancy. This book provides an up-to-date summary and synthesis of knowledge regarding placental vascular biology and discusses the relevance of this vascular bed to the functions of the human placenta.

Author : J. Gordon Betts,Peter DeSaix,Jody E. Johnson,Oksana Korol,Dean H. Kruse,Brandon Poe,James A. Wise,Mark Womble,Kelly A. Young
Publisher : Unknown
Page : 0 pages
File Size : 47,5 Mb
Release : 2013-04-25
Category : Electronic
ISBN : 1947172808

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Anatomy and Physiology by J. Gordon Betts,Peter DeSaix,Jody E. Johnson,Oksana Korol,Dean H. Kruse,Brandon Poe,James A. Wise,Mark Womble,Kelly A. Young Pdf

Author : Matthew E. Cross,Emma V. E. Plunkett
Publisher : Cambridge University Press
Page : 439 pages
File Size : 40,6 Mb
Release : 2014-03-06
Category : Medical
ISBN : 9781107615885

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Physics, Pharmacology and Physiology for Anaesthetists by Matthew E. Cross,Emma V. E. Plunkett Pdf

A quick reference to basic science for anaesthetists, containing all the key information needed for FRCA exams.

Author : Arindam Bit
Publisher : Myprint
Page : 316 pages
File Size : 48,6 Mb
Release : 2020-12
Category : Electronic
ISBN : 0750320893

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Flow Dynamics and Tissue Engineering of Blood Vessels by Arindam Bit Pdf

Flow Dynamics and Tissue Engineering of Blood Vessels explores the physical phenomena of vessel compliance and its influence on blood flow dynamics, as well as the modification of flow structures in the presence of diseases within the vessel wall or diseased blood content. This volume also illustrates the progress of tissue engineering for the intervention of re-engineered blood vessels. Blood vessel organoid models, their controlling aspects, and blood vessels based on microfluidic platforms are illustrated following on from the understanding of flow physics of blood on a similar platform. The purpose of this book is to provide an overview of regenerative medicine and fluid mechanics principles for the management of clinically diseased blood vessels. Authors discuss tissue engineering aspects and computational fluid mechanical principles, and how they can be used to understand the state of blood vessels in diseased conditions. Key Features Computational and experimental fluid dynamics principles have been used to explore the modelling of diseased blood vessels Principles of fluid dynamics and tissue engineering are used to propose innovative designs of bioreactors for blood vessel regeneration Offers experimental analytical studies of blood flow in vessels with pathological conditions Controlling aspects of various parameters while developing blood-vessel bioreactors and organoid models are presented critically, and optimization techniques for these parameters are also provided

Author : Richard E. Klabunde
Publisher : Lippincott Williams & Wilkins
Page : 689 pages
File Size : 54,8 Mb
Release : 2020-12-01
Category : Medical
ISBN : 9781975150099

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Cardiovascular Physiology Concepts by Richard E. Klabunde Pdf

Praised for its concise coverage, this highly accessible monograph lays a foundation for understanding the underlying concepts of normal cardiovascular function and offers a welcome alternative to a more mechanistically oriented approach or an encyclopedic physiology text. Clear explanations, ample illustrations and engaging clinical cases and problems provide the perfect guidance for self-directed learning and prepare you to excel in clinical practice.

Author : Chetan Trivedy,Matthew Hall,Harold Ellis
Publisher : CRC Press
Page : 771 pages
File Size : 49,5 Mb
Release : 2016-05-15
Category : Medical
ISBN : 9780340985014

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Basic Sciences for MCEM by Chetan Trivedy,Matthew Hall,Harold Ellis Pdf

This book is a dedicated resource for those sitting the Part A of the MCEM (Membership of the College of Emergency Medicine) examination. It forms an essential revision guide for emergency trainees who need to acquire a broad understanding of the basic sciences, which underpin their approach to clinical problems in the emergency department. Common clinical scenarios are used to highlight the essential underlying basic science principles, providing a link between clinical management and a knowledge of the underlying anatomical, physiological, pathological and biochemical processes. Multiple choice questions with reasoned answers are used to confirm the candidates understanding and for self testing. Unlike other recent revision books which provide MCQ questions with extended answers, this book uses clinical cases linked to the most recent basic science aspects of the CEM syllabus to provide a book that not only serves as a useful revision resource for the Part A component of the MCEM examination, but also a unique way of understanding the processes underlying common clinical cases seen every day in the emergency department. This book is essential for trainees sitting the Part A of the MCEM exam and for clinicians and medical students who need to refresh their knowledge of basic sciences relevant to the management of clinical emergencies.

Author : Stephen Payne
Publisher : Springer
Page : 125 pages
File Size : 55,6 Mb
Release : 2016-06-24
Category : Technology & Engineering
ISBN : 9783319317847

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Cerebral Autoregulation by Stephen Payne Pdf

This Brief provides a comprehensive introduction to the control of blood flow in the brain. Beginning with the basic physiology of autoregulation, the author goes on to discuss measurement techniques, mathematical models, methods of analysis, and relevant clinical conditions, all within this single volume. The author draws together this disparate field, and lays the groundwork for future research directions. The text gives an up-to-date review of the state of the art in cerebral autoregulation, which is particularly relevant as cerebral autoregulation moves from the laboratory to the bedside. Cerebral Autoregulation will be useful to researchers in the physical sciences such as mathematical biology, medical physics, and biomedical engineering whose work is concerned with the brain. Researchers in the medical sciences and clinicians dealing with the brain and blood flow, as well as industry professionals developing techniques such as ultrasound, MRI, and CT will also find this Brief of interest.

Author : David Young
Publisher : Biota Publishing
Page : 110 pages
File Size : 48,5 Mb
Release : 2010-01-01
Category : Medical
ISBN : 9781615040223

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Control of Cardiac Output by David Young Pdf

Although cardiac output is measured as the flow of blood from the left ventricle into the aorta, the system that controls cardiac output includes many other components besides the heart itself. The heart’s rate of output cannot exceed the rate of venous return to it, and therefore, the factors governing venous return are primarily responsible for control of output from the heart. Venous return is affected by its pressure gradient and resistance to flow throughout the vascular system. The pressure gradient for venous return is a function of several factors including the blood volume flowing through the system, the unstressed vascular volume of the circulatory system, its capacitance, mean systemic pressure, and right atrial pressure. Resistance to venous return is the sum of total vascular resistance from the aortic valve to the right atrium. The sympathetic nervous system and vasoactive circulating hormones affect short-term resistance, whereas local tissue blood flow autoregulatory mechanisms are the dominant determinants of long-term resistance to venous return. The strength of contraction of the heart responds to changes in atrial pressure driven by changes in venous return, with small changes in atrial pressure eliciting large changes in strength of contraction, as described by the Frank–Starling mechanism. In addition, the autonomic nervous system input to the heart alters myocardial pumping ability in response to cardiovascular challenges. The function of the cardiovascular system is strongly affected by the operation of the renal sodium excretion–body fluid volume–arterial pressure negative feedback system that maintains arterial blood pressure at a controlled value over long periods. The intent of this volume is to integrate the basic knowledge of these cardiovascular system components into an understanding of cardiac output regulation. Table of Contents: Introduction / Venous Return / Cardiac Function / Integrated Analysis of Cardiac Output Control / Analysis of Cardiac Output Regulation by Computer Simulation / Analysis of Cardiac Output Control in Response to Challenges / Conclusion / References / Author Biography

Author : Bruce Alberts
Publisher : Unknown
Page : 0 pages
File Size : 46,8 Mb
Release : 2002
Category : Cytology
ISBN : 0815332181

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Molecular Biology of The Cell by Bruce Alberts Pdf

Author : Ronald Hoffman
Publisher : Unknown
Page : 2821 pages
File Size : 41,5 Mb
Release : 2005
Category : Blood
ISBN : 0443066280

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Hematology by Ronald Hoffman Pdf

Author : Annie Viallat,Manouk Abkarian
Publisher : CRC Press
Page : 457 pages
File Size : 49,6 Mb
Release : 2019-12-09
Category : Medical
ISBN : 9781315395135

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Dynamics of Blood Cell Suspensions in Microflows by Annie Viallat,Manouk Abkarian Pdf

The first book to provide a physical perspective of blood microcirculation Draws attention to the potential of this physical approach for novel applications in medicine Edited by specialists in this field, with chapter contributions from subject area specialists