. The animans and man; an elementary textbook of zoology and human physiology. ts body made up of head, trunk,legs, and tail—the head comprising skull with brain inside,jaws with teeth, tongue, eyes, ears, etc.; the trunk com-prising a host of internal parts, as the backbone, heart,lungs, stomach, intestines, etc., and the legs in turn composedof a series of bones to which are attached muscles, amongwhich run nerves and blood-vessels, the whole being coveredwith a hairy skin. The study of the parts, external andinternal, of an animal is called anatomy, and the study ofthe uses or functions of
. The animans and man; an elementary textbook of zoology and human physiology. ts body made up of head, trunk,legs, and tail—the head comprising skull with brain inside,jaws with teeth, tongue, eyes, ears, etc.; the trunk com-prising a host of internal parts, as the backbone, heart,lungs, stomach, intestines, etc., and the legs in turn composedof a series of bones to which are attached muscles, amongwhich run nerves and blood-vessels, the whole being coveredwith a hairy skin. The study of the parts, external andinternal, of an animal is called anatomy, and the study ofthe uses or functions of the parts is called physiology. Inearlier years anatomy and physiology were studied whollyseparately, as they still sometimes are. But we know thatthe things animals do, and the ways in which they do them,depend upon the parts of the body and upon the specialcharacter of these parts. We know also that these partsare specially developed and fitted to do certain things orperform certain functions in special ways. That is, the THE ANIMALS AND MAN FIG. 1. Locusts onwild structure of a part and itsfunction or business are close-ly related. A grasshoppershind legs are specially longand strong so as to enable thegrasshopper to hop; or wemay put it differently andsay that the grasshopper canhop because its hind legs arespecially long and strong. Inwhichever way we look at thisrelation between the power ofan animal to do something ina special way and its posses-sion of parts specially fitted(Natural size; for doing this something, from life.) 1^.1 ~u i whether it be hopping, orflying, or singing, or breathingunder water, it must be kept always plainlyin mind that such a close relation doesexist. Therefore when we study themake-up of an animal, examining care-fully the various parts of the body, weshould always remember that this partic-ular make-up or structure is closely con-nected with the things the animal can do,and the special manner in which it doesthem. The grasshopp
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Keywords: ., bookcentury1900, bookd, booksubjectphysiology, booksubjectzoology
