Physiology

Physiology is the science which deals with the functions of living tissues. The study of the structure of such tissues is the subject-matter of Histology (q.v.), and their chemical constitution is dealt with by that branch of physiological science known as chemical physiology. Physiology proper is concerned with the functions of the blood and circulatory organs, of digestive, respiratory, secretory, and excretory organs, and those of muscle and nerve. To these must be added the organs of special sense and the subject of reproduction. [Blood, Hbabt, Digestion,' Muscle, Nerve, etc.]