The principles of physiology / by John Gray McKendrick.

  • John Gray McKendrick
Date:
[1912]
Catalogue details

Licence: Public Domain Mark

Credit: The principles of physiology / by John Gray McKendrick. Source: Wellcome Collection.

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    matters are now highly skilful and accurate. Histology has both a morphological side, in as far as it deals with form, and a physiological when it treats of the functions performed by these tissues. Further, much information is furnished to the physiologist by the examina¬ tion of the body at various stages of growth, and more especially in the earlier stages. Thus the study of the formation and early development of the embryo, and tracing the origin of the tissues, and the gradual building up of the more complicated organs, have thrown light on vital phenomena. This line of research is known as Embryology. The body is also the theatre of many phenomena of a chemical character; indeed it may be said that the phenomena of life depend essentially on chemical changes. As we shall see, food and oxygen are introduced into the body, and, by chemical changes, often of a complicated kind, many chemical substances are formed, some of which are built into the tissues, while others are thrown out as effete. Many of the operations in the digestion of food and in the formation of