alexander bruce edwin bramwell (2 risultati)

Paperback. Condizione: New. Print on Demand. This book is a study of the secondary degeneration of the central nervous system, primarily of nerve fiber tracts within the posterior columns of the spinal cord, with examinations done on monkeys and dogs as well as humans. Prior research on rabbits, rats, guinea pigs, squirrels, and kangaroos demonstrated the pyramidal tracts of these animals descended through the posterior columns. This book is distinct in that it examines the tracts in humans and primates. Building on the work of various researchers throughout the late 19th century, the author provides evidence to suggest there are long endogenous fibers that originate high up in the mid-brain, or even slightly anterior to this, in the thalamic region, and descend as far as the lower dorsal region, or even lower. The insights provided here will be of great use to anyone with an interest in the descending tracts, descending fibers, and their functions in the posterior columns of the spinal cord, and the broader field of the anatomy of the nervous system and the histology of the central nervous system. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.

Paperback. Condizione: New. Print on Demand. This book offers a fascinating analysis of the concepts of heredity and variation, and the role they play in the development of organisms. The author, a renowned embryologist, challenges the widely accepted theories of direct development and somatic origin of germ cells. Through extensive research on germ cells in various animal species, the author provides groundbreaking evidence for a morphological continuity of germ cells throughout the life cycle. This discovery forms the cornerstone of their theory of an antithetic alternation of generations, a novel concept that revolutionizes our understanding of Metazoan development. The book delves deep into the intricate mechanisms of cell division and the formation of germ cells, shedding new light on the complex relationships between asexual and sexual generations. The author's insights challenge conventional wisdom and open up new avenues for exploration in the field of embryology, genetics, and evolutionary biology. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item.