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HUMAN PHYSIOLOGY.

INTRODUCTION. Definitions.-If the body of any animal be dissected, it will be found to be composed of organs, such as the heart, stomach, lungs, brain, etc.; these organs again, upon a closer examination, will be found to be composed of simpler structures, known as tissues; e. g., epithelial, connective, muscular, and nervous. A description of the several organs which make up the body of any animal, their external form, their internal arrangement, their relations to each other, constitutes the science of ANIMAL ANATOMY. This may naturally be divided into1. Comparative Anatomy, the object of which is a comparison of the

structures of two or more animals, with a view of determining their

points of resemblance or dissimilarity. 2. Special Anatomy, the object of which is the investigation of the

construction, form, and arrangement of the organs and tissues of any individual animal. The study of the tissues, their properties, and minute structure constitutes that branch of anatomy known as His

TOLOGY.

Human Anatomy is that department of anatomical science which has for its object the investigation of the construction of the human body.

Animal Physiology is a study of the vital phenomena exhibited by the organs and tissues of which the body of any animal is composed. This may be divided into1. Comparative Physiology, the province of which is a comparison of the vital phenomena exhibited by the various structures of two or more

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Pons Varolii, .
Crura Cerebri,
Corpora Quadrigemina,
Corpora Striata and Optic Thalami,
Cerebellum,
Cerebrum,

Sympathetic Nervous System,
Sense of Touch,
SENSE OF TASTE,
SENSE OF SMELL,
SENSE OF Sight, .
SENSE OF HEARING,
VOICE AND SPEECH,
REPRODUCTION,

Generative Organs of the Female, .
Generative Organs of the Male, .
Development of Accessory Structures,

Development of the Embryo, . .
TABLE OF PHYSIOLOGICAL CONSTANTS,
TABLE SHOWING RELATION OF WEIGHTS AND MEASURES OF THE

METRIC SYSTEM TO APPROXIMATE WEIGHTS AND MEASURES

OF THE U. S., INDEX,

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