Download or read book The Cerebral Circulation written by Marilyn J. Cipolla and published by Biota Publishing. This book was released on 2016-07-28 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book The Cerebral Circulation written by Marilyn J. Cipolla and published by Morgan & Claypool Publishers. This book was released on 2010 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: This presentation 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 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. This chapter will review these special features of the cerebral circulation and how they contribute to the physiology of the brain. Table of Contents: Introduction / Anatomy and Ultrastructure / Perivascular Innervation / Regulation of Cerebrovascular Tone / Control of Cerebral Blood Flow / Barriers of the CNS / Summary / References

Download or read book The Brain Vascular System written by Harry A. Kaplan and published by . This book was released on 1966 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Human Brainstem Vessels written by Henri M. Duvernoy and published by Springer Science & Business Media. This book was released on 2013-11-22 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: I am greatly pleased and honoured to have been invited by Professor HENRI DUVERNOY to contribute a foreword to this book, especially since I became aware of the magnitude of his researches upon the cerebral vessels only a few years ago. These researches have, in fact, been pursued for almost two decades, beginning with a study of the hypophyseal vessels in 1958. More recently he has published a monograph entitled "The Superficial Veins of the Human Brain", and those who know this book will have noted the succinct clarity of the descriptive text and the superb quality ofthe photographs with which this chef-d'oeuvre is illustrated. This outstanding contribution to intimate detail of the superficial vascularization of the brainstem is now complemented by a second volume on internal angio-architec ture. As before, the emphasis is upon direct photographic evidence, and again the photographs are of a quality which must be almost unsurpassable. Those who are familiar with the technique of vascular injection of the brain and of the diffi culties of micro-anatomical identification, will applaud the excellence of Professor DUVERNOY' s preparations. Even the smallest named nuclei and fasciculi of nerve fibres are displayed most effectively. From study of these details, in conjunction with other descriptions of brain stern vessels (to which Professor DUVERNOY has hirnself contributed much), the vascular supply and drainage of all the recognised entities in the brain stern can be deduced.

Download or read book Vascular Development written by Derek J. Chadwick and published by John Wiley & Sons. This book was released on 2007-08-20 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The formation of blood vessels is an essential aspect of embryogenesis in vertebrates. It is a central feature of numerous post-embryonic processes, including tissue and organ growth and regeneration. It is also part of the pathology of tumour formation and certain inflammatory conditions. In recent years, comprehension of the molecular genetics of blood vessel formation has progressed enormously and studies in vertebrate model systems, especially the mouse and the zebrafish, have identified a common set of molecules and processes that are conserved throughout vertebrate embryogenesis while, in addition, highlighting aspects that may differ between different animal groups. The discovery in the past decade of the crucial role of new blood vessel formation for the development of cancers has generated great interest in angiogenesis (the formation of new blood vessels from pre-existing ones), with its major implications for potential cancer-control strategies. In addition, there are numerous situations where therapeutic treatments either require or would be assisted by vasculogenesis (the de novo formation of blood vessels). In particular, post-stroke therapies could include treatments that stimulate neovascularization of the affected tissues. The development of such treatments, however, requires thoroughly understanding the developmental properties of endothelial cells and the basic biology of blood vessel formation. While there are many books on angiogenesis, this unique book focuses on exactly this basic biology and explores blood vessel formation in connection with tissue development in a range of animal models. It includes detailed discussions of relevant cell biology, genetics and embryogenesis of blood vessel formation and presents insights into the cross-talk between developing blood vessels and other tissues. With contributions from vascular biologists, cell biologists and developmental biologists, a comprehensive and highly interdisciplinary volume is the outcome.

Download or read book Advances in Brain Vascular Research written by Ana Clara Cristóvão and published by Cambridge Scholars Publishing. This book was released on 2020-07-24 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The brain vasculature nurtures and regulates basic functions of the central nervous system (CNS), acting as a barrier against pathogens. This book provides in-depth and focused data on the characteristics, function and role of brain blood vessels in health and disease. It addresses topics such as vascular activity, cell-cell communication, and the role of the endothelium in the development of the most prevalent types of cerebrovascular disease, neurodegenerative disorders, cognitive impairment, and vascular abnormalities. It offers an updated view of the current state of microvascular biology and research, and thus supports the discovery of new therapeutic agents and procedures directed at several CNS disorders.

Download or read book Applied Cerebral Angiography written by Gianni Boris Bradac and published by Springer. This book was released on 2017-09-07 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers detailed guidance on the diagnostic use of cerebral angiography based on precise description of the angiographic appearances of normal anatomy and pathological conditions. In this third edition, every chapter has been thoroughly revised and enlarged to reflect new knowledge and experiences, and more attention is paid to the correlations between anatomopathological findings and clinical manifestations. Beyond explaining the diagnostic value of cerebral angiography, a key aim is to equip readers with the precise knowledge of the anatomy of cerebral vessels required for optimal application of endovascular therapy of pathologies involving the arteries and veins of the brain. As in preceding editions, the book is divided into two parts. The first part describes the normal anatomy, with attention to morphological aspects, embryological development, function, and vascular territories. The intraorbital and extracranial vascularization is also fully considered. The knowledge provided will serve as a sound basis for the correct interpretation of pathological processes and their clinical significance, as covered in depth in the second part of the book.

Download or read book Arterial Behavior and Blood Circulation in the Brain written by Georgiĭ Iosifovich Mchedlishvili and published by . This book was released on 1986 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Introduction to Vascular Neurosurgery written by Justin R. Mascitelli and published by Springer Nature. This book was released on 2022-01-12 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book aims to cover the majority of neurovascular diseases and management. The first section reviews neurovascular anatomy, the basics of angiography, and the basics of craniotomies for neurovascular diseases. Next, an entire section is devoted to intracranial aneurysms, covering the natural history, subarachnoid hemorrhage, endovascular management, microsurgical management, and vasospasm. Following this, a number of chapters are devoted to stroke including natural history, mechanical thrombectomy, intracranial stenosis, Moyamoya disease, bypass surgery, vertebrobasilar insufficiency, intracerebral hemorrhage, sinus thrombosis, and the surgical and endovascular management of extracranial carotid disease. Next, the text covers vascular malformations including arteriovenous malformation, arteriovenous fistulas, carotid cavernous fistulas, vein of Galen malformations, spinal malformations, and cavernous malformations. Finally, the book discusses a few miscellaneous topics including more recent advances in neurovascular care such as venous sinus stenting for idiopathic intracranial hypertension and middle meningeal artery embolization for subdural hematoma. Written by experts in the field, Introduction to Vascular Neurosurgery provides a comprehensive summary of neurovascular disease and management. The book can be used as a daily reference and serves as a trusted resource for medical students, residents, fellows, and young attendings.

Download or read book The Brain Vascular System written by and published by . This book was released on 1966 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cerebral Small Vessel Disease written by Leonardo Pantoni and published by Cambridge University Press. This book was released on 2014-05 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Up-to-date discussion of the etiology, diagnosis, treatment, and prevention of this common cause of stroke and cognitive impairment.

Download or read book Regulation of Coronary Blood Flow written by Michitoshi Inoue and published by Springer Science & Business Media. This book was released on 2013-11-09 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Biophysical Aspects of Cerebral Circulation written by Yu. E. Moskalenko and published by Elsevier. This book was released on 2013-10-22 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biophysical Aspects of Cerebral Circulation provides a comprehensive review of the cerebral circulatory system. This book consists of four chapters. Chapter 1 is devoted to methodology attempts to explain the special features of a biophysical approach. The biophysical principles of the most commonly used modem methods such as the clearance method and rheoencephalography are described in detail. The second and third chapters examine all the biophysical aspects of the cerebral circulatory system as a functional unit and deal with some principles of its regulation. The results of systems analysis using mathematical modeling are presented in broad outline. Chapter 4 deals with processes related to the regional cerebral circulation. Such investigations focus mainly on the relationship between periodically fluctuating factors affecting limited areas of brain tissue. This text is beneficial to medical students and individuals researching on cerebral circulation.

Download or read book Frontiers in Cerebral Vascular Biology written by Lester R. Drewes and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 283 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past three decades, the cerebral vasculature and its role in blood-brain transport has been an increasingly active area of investigation and learning, particularly from an anatomical and physiological point of view. However, much less is known at the molecular and cellular level about the blood-brain barrier especially regarding the macromolecules responsible for transport, the roles played by vascular wall components (endothelial cell, pericyte, smooth muscle, basement membrane), and the mechanisms regulating brain vascular-specific protein expression and their molecular alterations during development and disease. Fundamental questions still unanswered include: What are the molecular constituents of brain endothelial cell tight junctions? What are the membrane proteins responsible for transport of specific substrates? What are the molecular signals that cause glucose transporter gene expression to be 20 to 100 times greater in brain endothelial cells in vivo than in vitro? What roles do pericytes, smooth muscle cells and basement membrane have in establishing or maintaining blood-brain transport characteristics? Are brain vascular transport systems responsible for edema following injury? Are transporter systems regulated via receptor-mediated events? Do hormones or neuromodulators regulate transporter expression? What is the molecular mechanism by which plasma proteins enter the extravascular space? Are transporters asymmetrically distributed between the luminal and abluminal endothelial cell membranes? Can prodrugs or pharmacologic agents be designed as substrate analogs and be delivered to the central nervous system via existing transporters or receptors? Can new and beneficial transporters be introduced into the brain vasculature?

Download or read book The Mouse Brain in Stereotaxic Coordinates written by George Paxinos and published by . This book was released on 2001 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Mouse Brain in Stereotaxic Coordinates, Second Edition has been the acknowledged reference in this field since the publication of the first edition, and is now available in a Compact Edition. This will provide a more affordable option for students, as well as researchers needing an additional lab atlas. This version includes the coronal diagrams delineating the entire brain as well as the introductory text from the Deluxe edition. It is an essential reference for anyone studying the mouse brain or related species.* Includes 100 detailed diagrams of the coronal set delineating the entire mouse brain * Compact edition of the most comprehensive and accurate mouse brain atlas available* Contains minor updates and revisions from the full edition