Physiology and Hygiene for Secondary Schools

The body is studied from three standpoints: structure, use of parts, and care or management. This causes the main subject to be considered under three heads, known as anatomy, physiology, and hygiene.


Anatomy treats of the construction of the body—the parts which compose it, what they are like, and where located. Its main divisions are known as gross anatomy and histology. Gross anatomy treats of the larger structures of the body, while histology treats of the minute structures of which these are composed—parts too small to be seen with the naked eye and which have to be studied with the aid of the microscope.