The Cerebral Circulation PDF Download
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Author: Marilyn J. Cipolla
Publisher: Biota Publishing
ISBN: 1615047239
Category : Medical
Languages : en
Pages : 82
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Book Description
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: Marilyn J. Cipolla
Publisher: Biota Publishing
ISBN: 1615047239
Category : Medical
Languages : en
Pages : 82
Get Book Here
Book Description
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: Bernard George
Publisher: Springer Science & Business Media
ISBN: 3709169674
Category : Medical
Languages : en
Pages : 384
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Book Description
Our common interest in surgery of the vertebral artery was born in 1976, when as residents in the same hospital, we attended an attempt by two senior surgeons to treat an aneurysm of the vertebral artery at the C 3 level. Long discussions had preceded this unsuccessful trial, to decide if surgery was indicated and to choose the surgical route. Finally a direct lateral approach was performed, but access was difficult and correct treatment was impossible, resulting in only partial reduction of the aneurysmal pouch. Following this experience, we decided to seek a regular and well defined approach for exposition of the vertebral artery. Review of the literature indicated some surgical attempts, but the descriptions did not give the impression of safety and reproducibility. No landmark on the described surgical route appeared sufficiently reliable. Henry's anatomical work (1917) gave the only accurate description on vertebral artery anatomy, and it became the basis for our work. When the same patient was referred again one year later, after a new stroke in the vertebro-basilar system, we had behind us repetitive experience on cadavers of an original approach to the distal vertebral artery.
Author: W. A. McAlpine
Publisher: Springer Science & Business Media
ISBN: 3642659837
Category : Medical
Languages : en
Pages : 234
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Book Description
The magnificent anatomic presentation in this book "The Heart and Cor onary Arteries" has a unique importance for surgeons. It is a fundamental contribution to the anatomy of the heart and great arteries as well, because of the analytical, detailed, and imaginative anatomic approach of the author. While surgery from time to time is influenced by the development of new physiologic principles and techniques, methods of intra- and post-operative support, and new diagnostic methodology, the excellence of its results con tinues to be related primarily to the precision and perfection of the opera tive procedure itself. The operative procedure can be precise and perfect only if it is based upon the surgeon's profound knowledge of normal anatomy, his understanding of the alterations in this normal anatomy by the pathol ogy with which he is dealing, and his ability to use this anatomic informa tion in organizing and effecting his surgical procedure. The cardiac sur geon, therefore, will find great rewards from intense study of this anatomic atlas. The cardiologist, the pediatric cardiologist, the anatomist, the pathol ogist, and students interested in cardiac disease will benefit to almost the same degree from a careful study of this work. May 1975 JOHN W. KIRKLIN, M. D.
Author:
Publisher:
ISBN: 9780815332183
Category : Cells
Languages : en
Pages : 0
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Book Description
Author: J. Gordon Betts
Publisher:
ISBN: 9781947172807
Category :
Languages : en
Pages : 0
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Book Description
Author: Antonino Cavallaro
Publisher: Springer Nature
ISBN: 3030496872
Category : Medical
Languages : en
Pages : 374
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Book Description
Popliteal aneurysms are still controversial in terms of their pathogenesis, and challenging in terms of their treatment. This book offers a detailed overview of the latest advances in our understanding of the disease, and highlights the latest theories. Divided into eght sections, it focuses on: the historical background, embryology and anatomy of the popliteal artery, clinical presentation and diagnosis, pros and cons of traditional surgical techniques, pros and cons of advanced endovascuar techniques. The last section focuses on non-atherosclerotic popliteal aneurysme, i.e. on diseases in which popliteal aneurysms may specifically appear, rendering more challenging the diagnosis and the treatment As stressed in the foreword by the Chief Editor of the Journal of Vascuar Surgery, this book, given its scope, offers a valuable guide for all health professionals - experts and in training -.involved in vascular pathology and surgery.
Author: Paolo Angelini
Publisher:
ISBN:
Category : Medical
Languages : en
Pages : 224
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Book Description
An atlas on coronary artery anomalies, this text provides a guide to the complex morphology that is essential to the understanding of coronary artery disease. The book features a variety of cases - with illustrative angiograms and diagrams - that demonstrates all possible anomalies and clarify what is abnormal. Each case includes clinical information, angiographic findings, other diagnostic material and a discussion.
Author: Michitoshi Inoue
Publisher: Springer Science & Business Media
ISBN: 4431683674
Category : Medical
Languages : en
Pages : 330
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Book Description
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: Robert Fitridge
Publisher: University of Adelaide Press
ISBN: 1922064009
Category : Medical
Languages : en
Pages : 589
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Book Description
New updated edition first published with Cambridge University Press. This new edition includes 29 chapters on topics as diverse as pathophysiology of atherosclerosis, vascular haemodynamics, haemostasis, thrombophilia and post-amputation pain syndromes.
Author: Yanni K. Tsipis
Publisher: Arcadia Publishing
ISBN: 9780738505268
Category : Travel
Languages : en
Pages : 132
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Book Description
Fifty years ago, the Central Artery snaked its way through Boston, destroying century-old neighborhoods and bustling commercial districts in the very heart of the city. Designed to open Boston's downtown to convenient car and truck access, the highway cut a two-mile-long gash through the nation's oldest and most historic city, destroying or casting a shadow over some of its most architecturally significant buildings. By the time the Central Artery was completed in 1959, many former supporters had already realized that it was a colossal mistake. Drawing on recently uncovered Massachusetts Department of Public Works archives and numerous other sources, Boston's Central Artery tells the story of the highway's construction and of the neighborhoods that it destroyed. The book is a vivid document of an era when roadways tore through the nation's downtown centers and displaced thousands of residents and businesses along the way. Written by an enginer-historian, Boston's Central Artery will appeal to not only those fascinated by the history of Boston but also those interested in urban history, architecture, and construction.
