The kidney is innervated with efferent sympathetic nerve fibers reaching the renal vasculature, the tubules, the juxtaglomerular granular cells, and the renal pelvic wall. The renal sensory nerves are mainly found in the renal pelvic wall. Increases in efferent renal sympathetic nerve activity reduce renal blood flow and urinary sodium excretion by activation of 1-adrenoceptors and increase renin secretion rate by activation of 1-adrenoceptors. In response to normal physiological stimulation, changes in efferent renal sympathetic nerve activity contribute importantly to homeostatic regulation of sodium and water balance. The renal mechanosensory nerves are activated by stretch of the renal pelvic tissue produced by increases in renal pelvic tissue of a magnitude that may occur during increased urine flow rate. Under normal conditions, the renal mechanosensory nerves activated by stretch of the sensory nerves elicits an inhibitory renorenal reflex response consisting of decreases in efferent renal sympathetic nerve activity leading to natriuresis. Increasing efferent sympathetic nerve activity increases afferent renal nerve activity which, in turn, decreases efferent renal sympathetic nerve activity by activation of the renorenal reflexes. Thus, activation of the afferent renal nerves buffers changes in efferent renal sympathetic nerve activity in the overall goal of maintaining sodium balance. In pathological conditions of sodium retention, impairment of the inhibitory renorenal reflexes contributes to an inappropriately increased efferent renal sympathetic nerve activity in the presence of sodium retention. In states of renal disease or injury, there is a shift from inhibitory to excitatory reflexes originating in the kidney. Studies in essential hypertensive patients have shown that renal denervation results in long-term reduction in arterial pressure, suggesting an important role for the efferent and afferent renal nerves in hypertension.

Human Growth and Development, Third Edition provides a comprehensive volume covering the biology of human growth and the genetic, endocrine, environmental, nutritional, and socio-economic factors that contribute towards its full expression. Human Growth and Development continues to be a valuable resource for researchers, professors and graduate students across the interdisciplinary area of human development. For the new edition, updates are made to all fourteen of the "core chapters" of the book which form the essential reading for a comprehensive understanding of human growth and development. Additionally, new special topics are covered including the interpretation of recently found sub-adult fossils that expand our understanding of the evolution of human growth and a discussion of the early pattern of growth and development as the developmental origins of risk for non-communicable diseases of adulthood. Human Growth and Development, Third Edition includes contributions from the well-known experts in the field and is the most reputable, comprehensive resource available.

The study of self-consciousness helps humans understand themselves and restores their identities. But self-consciousness has been a mystery since the beginning of history, and this mystery cannot be resolved by conventional natural science. In Self-Consciousness, author Masakazu Shoji takes the mystery out of self-consciousness by proposing the idea that the human brain and body are a biological machine. A former VLSI microprocessor designer and semiconductor physicist, Shoji was guided by the ideas of ancient sages to create a conceptual design of a human machine brain model. He explains how it works, how it senses itself and the outside world, and how the machine creates the sense of existence of the subject SELF to itself, just as a living human brain does. A follow-up to Shoji's previous book, Neuron Circuits, Electronic Circuits, and Self-Consciousness, this new volume examines self-consciousness from three unconventional viewpoints to present a complex theory of the mind and how self-consciousness develops.

Richard D. Alexander is an accomplished entomologist who turned his attention to solving some of the most perplexing problems associated with the evolution of human social systems. Using impeccable Darwinian logic and elaborating, extending and adding to the classic theoretical contributions of pioneers of behavioral and evolutionary ecology like George Williams, William Hamilton and Robert Trivers, Alexander developed the most detailed and comprehensive vision of human social evolution of his era. His ideas and hypotheses have inspired countless biologists, anthropologists, psychologists and other social scientists to explore the evolution of human social behavior in ever greater detail, and many of his seminal ideas have stood the test of time and come to be pillars of our understanding of human social evolution. This volume presents classic papers or chapters by Dr. Alexander, each focused on an important theme from his work. Introductions by Dr. Alexander's former students and colleagues highlight the importance of his work to the field, describe more recent work on the topic, and discuss current issues of contention and interest.