. The school physiology journal . ex-plain how the perspira-tory glands of the skinare so arranged as toallow the greatest possi-ble size in the smallestamount of space. Whyare both size and econ-omy of room necessaryhere? Find a gland whichhas more than one kindof work to do. Howdoes the structure of theliver fit it to act as anorgan of secretion, as astorehouse for any excessof sugar that there maybe in the body, and as anorgan first 6f assimilationand then of excretion? Find other organs ofsecretion which mustact as excretory organsas well. How does the way in which each ismade fit it for t
. The school physiology journal . ex-plain how the perspira-tory glands of the skinare so arranged as toallow the greatest possi-ble size in the smallestamount of space. Whyare both size and econ-omy of room necessaryhere? Find a gland whichhas more than one kindof work to do. Howdoes the structure of theliver fit it to act as anorgan of secretion, as astorehouse for any excessof sugar that there maybe in the body, and as anorgan first 6f assimilationand then of excretion? Find other organs ofsecretion which mustact as excretory organsas well. How does the way in which each ismade fit it for this double work? NECESSARY CARE Every workman knows that he must takecare of his tools if he expects to do good workwith them. If we think of the organs ofthe body as the tools which one must use indoing all kinds of work, it will be easy tounderstand why they too must be kept in per-fect repair. How can one take care of the tools we havebeen studying about in these lessons, the organsof secretion? The way to find out is to think. first what they are to be used for, and thenwhat will help them to do their work. The organs of secretion which help digestour food must have enough to do, hence wemust eat the kinds of food which each can actupon. Name foods which will give work to thesalivary glands; to the glands which secrete thepancreatic juice; to the liver; to the glandswhich secrete intestinal juices. Why shouldstarchy foods be well cooked, while eggs shouldnot? Rest is needed by theorgans of secretion asmuch as work. Why isthis a reason for noteating between meals ?How does chewing gumor tobacco overwork thesalivary glands? If itis a part of the work ofthe liver to store upsugar, why is it not agood thing to eat muchcandy ? Why is it betterto eat oatmeal withoutsugar ? Other organs of secre-tion, such as the glandsof the skin, the eye, andear, and the membraneswhich surround bone andmuscle, and line the airpassages, work in differ-ent ways, so need differ-ent kinds of care. H
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecthygiene, bookyear1902
