A comprehensive and accessible introduction to the study of human physiology. Written by Gordon Holmes, a renowned physiologist of the early 20th century, the book covers all the major systems of the human body, from the nervous system to the circulatory system to the endocrine system. With clear explanations and helpful illustrations throughout, this book is an excellent resource for students and professionals alike. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.