Physiology, hygiene and sanitation, an elementary textbook of physiology, with special attention given to hygiene and sanitation (1919) (14764817622)

Identifier: physiologyhygien00heiz (find matches)

Title: Physiology, hygiene and sanitation, an elementary textbook of physiology, with special attention given to hygiene and sanitation

Year: 1919 (1910s)

Authors: Heizer, W. L. (W. Lucien), b. 1880

Subjects: Physiology Hygiene Sanitation

Publisher: Louisville, Ky., C.T. Dearing Printing Co., Incorporated

Contributing Library: The Library of Congress

Digitizing Sponsor: The Library of Congress

Text Appearing Before Image:

Fig. 55.—The large one, a whitecorpuscle in about 500 redones. The more 138 PHYSIOLOGY, HYGIENE AND SANITATION them. The white blood cells carry food to the body cells,collect wastes and destroy germs that threaten the life of

Text Appearing After Image:

Fig-. 56.—The heart, showing- large blood vessels,positions of its right chambers. and cells, and have the power of self-movement. They aresometimes called the wandering cells. The blood is carried to every part of the bodythrough the action of the organs of circulation; these THE CIRCULATORY SYSTEM 139 are the heart, arteries, capillaries and veins and lymph-atics. The Heart. The heart is a pear-shaped, hollow, muscu-lar organ about the size of ones fist. It is in the chesta little to the left of the middle of the breast bone(sternum) and its beat can be plainly felt in thisregion. It is enclosed in a sac called the pericardium. The heart is a pump and a wonderful one it is. It hasfour cavities, two auricles and two ventricles. All theblood of the body isemptied into the ventricleswhere it is pumpedthrough every part of thebody. The right side ofthe heart receives theblood as it returns fromits trip through the bodyand pumps it through thelungs whereit is purified.The left side of

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1919

Library of Congress

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