the evolution of organ systems

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The Evolution Of Organ Systems

Author : Andreas Schmidt-Rhaesa
ISBN : 9780198566687
Genre : Language Arts & Disciplines
File Size : 85. 74 MB
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Although there are several books on the phylogenetic relationships of animals, this is the first to focus on the consequences of such relationships for the evolution of organs themselves. It provides a summary of evolutionary hypotheses for each of the major organ systems, describing alternative theories in those cases of continuing controversy.

Human Biological Aging

Author : Glenda E. Bilder
ISBN : 9781118967027
Genre : Science
File Size : 62. 19 MB
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"Human Biological Aging will introduce the student to human aging from the level of macromolecules to organ systems. Age changes in proteins, DNA, polysaccharides and lipids are discussed relative to known age-related alterations in structure and function produced by free radicals and oxidants. At the cellular level, age-dependent mechanisms that diminish organelle function are described. Cellular phenomena of replicative senescence apoptosis, autophagy and neuroplasticity are detailed as to their contribution to compromised cellular functions. The unique age changes of each organ-system are presented. Some important changes include photo-aging in the integument, increased airway resistance, decreased thoracic chest compliance and reduction of active lung tissue in the pulmonary system, endothelial dysfunction in the cardiovascular system, cognitive changes influenced by negative and positive neuroplasticity in the central nervous system, the impact of presbyopia, presbycusis and sensory fiber loss on sensory perception, sarcopenia and dynapenia in the skeletal muscle system, the effects of menopause, altered stress response and loss of growth hormone in the hypothalamic pituitary system, age changes in bone remodeling and modeling in the skeletal system and prostatic hypertrophy and urinary incontinence in the excretory system. The selection of book material is based on Dr. Bilder's lectures developed over the years as the teacher for a Biology of Aging course at Gwynedd Mercy University. Her lectures covered biological aging from the bottom up - macromolecules to organ-systems. Additionally the student is introduced to methods and measurements in aging and the tools to critique future findings, the effects of classic caloric restriction studies and newer gene manipulations and the evolutionary theory of aging that accepted biological aging as truly biological. Major age-related diseases are absent from this textbook as biogerontologists consider disease distinct from aging. Instead this textbook includes many age changes that highlight how aging is a risk factor for disease. To fully understand biological aging, it is necessary to include primary biological content and then to develop aging insights. For example, to understand the role of aging in the development of sarcopenia and dynapenia, an appreciation of skeletal muscle structure and function is important, after which age changes of sarcopenia and dynapenia and the influence of exercise and protein consumption becomes meaningful. Similarly comprehension of the theories of aging require rudimentary knowledge of oxidation/reduction reactions, protein function, cell organelles, mitosis, acquired immunity, and evolution, to name a few basic biological concepts. Without some biological fundamentals, the student of biological aging struggles to learn the essentials of biological aging and to appreciate the research advances on aging. With regards to format, basic knowledge is given first. Biological terms are defined; key questions to aid with study are given with each chapter. Specifically the reader will learn the current theories of aging, their origins and their value in the scientific literature. The reader will learn why aging is not a disease but a risk for disease. The reader will understand how age changes are measured and appreciate the difficulties of obtaining accurate observations on aging. Thus, in forthcoming findings, the student will be equipped to discriminate between hype and worthwhile advances. This textbook will provide the reader with an overview of the major animal models of aging so that the relevance of this data on conserved mechanisms is evident. Finally, this textbook will give to the reader a framework to incorporate new information. The reader will realize the significance of the health span and gain competency to select lifestyle choices that prolong it."--

Relative Radiation Sensitivities Of Human Organ Systems

Author : John T. Lett
ISBN : 9781483215686
Genre : Science
File Size : 68. 76 MB
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Advances in Radiation Biology, Volume 12: Relative Radiation Sensitivities of Human Organ Systems covers articles on the response of selected human organ and tissue systems to exposure to ionizing radiation. The book presents articles on the relative radiosensitivities of the thymus, spleen, lymphohemopoietic systems, small and large intestines, oral cavity, larynx, pharynx, and esophagus. The text also includes articles on the relative radiation sensitivity of the integumentary system, as well as the relative radiosensitivity of the human lung and fetal tissues. The tolerance of the central and peripheral nervous system to therapeutic irradiation is also encompassed. Radiation biologists, oncologists, physicians, pediatricians, and medical students will find the book useful.

Angiosperm Origins

Author : Valentin A. Krassilov
ISBN : 9546420166
Genre : Science
File Size : 52. 3 MB
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Generelle Morphologie Der Organismen

Author : Ernst Haeckel
ISBN : UOM:39015033692107
Genre :
File Size : 89. 21 MB
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Body Systems

Author : Denise Walker
ISBN : 1583409904
Genre : Juvenile Nonfiction
File Size : 20. 83 MB
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Introduces readers to the fuel the body needs to carry out vital processes. Find out how the digestive system turns food into part of you, learn how the skeletal and circulatory systems work, and discover the importance of a balanced diet.

Ber Das Nat Rliche Und G Ttliche Princip Des Organismus

Author : Georgius Ernestus Vend
ISBN : BSB:BSB10849871
Genre :
File Size : 82. 81 MB
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Animal Evolution

Author : Maximilian J. Telford
ISBN : 9780199549429
Genre : Science
File Size : 26. 5 MB
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Describing and understanding the evolution of the diversity of bodyplans is a major goal of evolutionary biology. Taking a modern, integrated approach to this question, a group of leading researchers describe how modern techniques and disciplines have been combined, resulting in a dramatic renaissance in the study of animal evolution.

Avian Growth And Development

Author : J. Matthias Starck
ISBN : 0195106083
Genre : Nature
File Size : 38. 60 MB
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This re-appraisal of concepts in avian development presents an integrative perspective on the biology, ecology, and evolution of diverse bird species--from altricial birds to the megapodes.

Long Term Dynamical Behaviour Of Natural And Artificial N Body Systems

Author : Archie E. Roy
ISBN : 9027728011
Genre : Science
File Size : 66. 4 MB
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The reader will find in this volume the Proceedings of the NATO Advanced Study Institute held in Cortina d'Ampezzo, Italy between August 3 and August 13, 1987 under the title "Long Term Dynamical Behaviour of Natural and Artificial N-body Systems". The Institute was the latest in a series held in 1972, 1975, 1978, 1981, 1984 in dynamical astronomy, theoretical mechanics and celestial mechanics under the Directorship of Professor Victor Szebehely. These previous institutes, held in high esteem by the international community of research workers, have resulted in a series of well-received and valuable Proceedings. In correspondence with Professor Szebehely and in long discussions with him in Colorado in August 1985, I agreed to his request that I undertake the preparation of a new ASI. I was happy to do so knowing I could call upon his vast experience in overseeing such ASI's. The last quarter century has been a period in which increasingly rapid progress has been made in celestial mechanics and related subjects not only because of the appearance of new problems urgently requiring solution but also because of the advent of new analytical techniques and powerful computer hardware and software.

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