Man-an Adaptive Mechanism PDF Download
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Author: George Washington Crile
Publisher:
ISBN:
Category : Adaptation (Biology)
Languages : en
Pages : 424
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Book Description
Author: George Washington Crile
Publisher:
ISBN:
Category : Adaptation (Biology)
Languages : en
Pages : 424
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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: Edward William Cox
Publisher:
ISBN:
Category : Psychology
Languages : en
Pages : 582
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Book Description
Author: Edward William Cox
Publisher:
ISBN:
Category : Psychology
Languages : en
Pages : 542
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Book Description
Author: Roland N. Pittman
Publisher: Biota Publishing
ISBN: 1615047212
Category : Medical
Languages : en
Pages : 117
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Book Description
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: United States. Public Health Service. Office of the Surgeon General
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 728
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Book Description
This report considers the biological and behavioral mechanisms that may underlie the pathogenicity of tobacco smoke. Many Surgeon General's reports have considered research findings on mechanisms in assessing the biological plausibility of associations observed in epidemiologic studies. Mechanisms of disease are important because they may provide plausibility, which is one of the guideline criteria for assessing evidence on causation. This report specifically reviews the evidence on the potential mechanisms by which smoking causes diseases and considers whether a mechanism is likely to be operative in the production of human disease by tobacco smoke. This evidence is relevant to understanding how smoking causes disease, to identifying those who may be particularly susceptible, and to assessing the potential risks of tobacco products.
Author: Jason H. T. Bates
Publisher: Cambridge University Press
ISBN: 0521509602
Category : Medical
Languages : en
Pages : 237
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Book Description
A modern quantitative study of lung mechanics, relating mathematical modeling and engineering principles to lung function, structure, mechanics, and disease.
Author: Thomas F. Hornbein
Publisher: Marcel Dekker
ISBN:
Category : Respiration
Languages : en
Pages : 714
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Book Description
Author: Arthur C. Guyton
Publisher: W.B. Saunders Company
ISBN:
Category : Medical
Languages : en
Pages : 728
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Book Description
A completely revised and updated edition of this popular classic. The 6th Edition retains its coverage of the basic physiology of the most common human disorders, and contains numerous examples that clarify physiology's importance to clinical medicine. Also features material on molecular and cellular physiology, endocrinology, the nervous system, metabolism, along with updated coverage of the kidneys and body fluids. Includes over 500 superb figures and tables, many new to this edition!
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309082587
Category : Medical
Languages : en
Pages : 172
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Book Description
This report from the Committee on Military Nutrition Research reviews the history of caffeine usage, the metabolism of caffeine, and its physiological effects. The effects of caffeine on physical performance, cognitive function and alertness, and alleviation of sleep deprivation impairments are discussed in light of recent scientific literature. The impact of caffeine consumption on various aspects of health, including cardiovascular disease, reproduction, bone mineral density, and fluid homeostasis are reviewed. The behavioral effects of caffeine are also discussed, including the effect of caffeine on reaction to stress, withdrawal effects, and detrimental effects of high intakes. The amounts of caffeine found to enhance vigilance and reaction time consistently are reviewed and recommendations are made with respect to amounts of caffeine appropriate for maintaining alertness of military personnel during field operations. Recommendations are also provided on the need for appropriate labeling of caffeine-containing supplements, and education of military personnel on the use of these supplements. A brief review of some alternatives to caffeine is also provided.
