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according action activity already alteration animal anodic appears applied Arch artificial become beginning break cardiac cause cells certain changes chemical circuit close closure complete conductivity connected consequence considerable constant continuous contractile contraction corresponding curve demonstrated dependent described developed direction duration effect electrical electrodes electromotive Engelmann entering entire excitation exhibited experiments fact fatigue fibres fibrils follows frog frog's further given gives greater hand heart height immediately increase induction intensity kathode latter layer leading less longitudinal lower marked mechanical method movements muscle muscle-fibres muscular natural negative variation nerve normal observed obtained occurs opening period persistent physiological polarisation positive possible preparation present produce proportion rapid reaction regard relations relaxation remains rest rule sartorius secondary seen segment short side similar single skin smooth solution stimulus strength striated muscle strong substance surface tetanus tion transverse twitch usually wave weak
Page 522 - Crown 8vo. 8s. 6d. AN INTRODUCTION TO THE OSTEOLOGY OF THE MAMMALIA : being the Substance of the Course of Lectures delivered at the Royal College of Surgeons of England in 1870. By Sir WILLIAM HENRY FLOWER, FRS Illustrated. Third Edition. Revised with the assistance of HANS GADOW, Ph.D. Crown 8vo.
Page 522 - Parker. — A COURSE OF INSTRUCTION IN ZOOTOMY (VERTEBRATA). By T. JEFFREY PARKER, B.Sc. London, Professor of Biology in the University of Otago, New Zealand. With Illustrations. Crown 8vo.
Page 257 - ... substance remain entire. These unchanged molecules are important, for they are responsible for the cataphoric action of the direct current. At the same time that the direct current causes the anions to move toward the anode and the cations toward the cathode, it also causes the unchanged molecules to move in the direction of the current — from the positive to the negative pole.
Page 522 - Freiburg-in-Baden, by W. NEWTON PARKER, Professor of Biology in the University College of South Wales and Monmouthshire.
Page 522 - Translated by H. and M. BERNARD. The Translation. Edited and Annotated, and a Preface written by Professor GB HOWES, FLS 8vo.
Page 107 - It seems to be an almost universal property of muscular substance to fall under certain conditions, with all prolonged stimuli, into a state of visible rhythmical excitation.
Page 522 - Text-Book of Physiology." By A. SHERIDAN LEA, MA, D.Sc., FRS, University Lecturer in Physiology in the University of Cambridge. Fifth Edition. 8vo.
Page 522 - A TEXT-BOOK OF PHYSIOLOGY. Illustrated. 5th Ed., largely revised. In Three Parts. 8vo. Part I., comprising Book I. Blood— The Tissues of Movement, The Vascular Mechanism. 10s. 6d. Part II., comprising Book II. The Tissues of Chemical Action, with their Respective Mechanisms — Nutrition 10s.
Page 83 - Assimilation and dissimilation must rather be conceived as two closely interwoven processes, which constitute the metabolism (unknown to us in its intrinsic nature) of the living substance, and active in the smallest particles, since living matter is neither permanent nor quiescent, but is in more or less constant internal motion.