The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . t supplying the eyes with sufficient quantitiesof humors to distend the ball, so we meet the emergencyby wearing spectacles: they are forgetful of the order bywhich their early labors were regulated, — and as onemistake leads to the commission of another ; lime is car-ried to the heart, where the valves become bony ; theurinary apparatus is carelessly watched, and stones formin the bladder; the teeth are not supplied with earthymatter in season to preve
The class-book of anatomy : designed for schools, explanatory of the first principles of human mechanism, as the basis of physical education . t supplying the eyes with sufficient quantitiesof humors to distend the ball, so we meet the emergencyby wearing spectacles: they are forgetful of the order bywhich their early labors were regulated, — and as onemistake leads to the commission of another ; lime is car-ried to the heart, where the valves become bony ; theurinary apparatus is carelessly watched, and stones formin the bladder; the teeth are not supplied with earthymatter in season to prevent their decay : — the hair is notwatered at the roots, and it becomes dry and falls off. Such cursory remarks as these, exhibit a birds-eye viewof the importance and multifarious functions of the arte-ries, and demonstrates the high value of the blood, fromwhich so much and such inimitable machinery is formed. As we now comprehend the use of the circulation, wewill next endeavor to solve another apparently difficultproblem — the why it is necessary to throw the blood intothe air cells of the lungs. ANATOMICAL CLASS BOOK. J 47 ?c;. Explanationof Fig. the student is desirous of thoroughly and clearly understandingthe circulation of the blood, as it moves in his own body, let himnow recapitulate the subject, by following the venous or black bloodfrom the two great supplying veins, till it arrives in the main dis-tributing artery, purified, re-vitalized and in a condition to sustain animal life. , .,,.,,, ., . , q, the descending vena cava, returning black blood troni the headand upper extremities. ,.,-., , r- o, the ascending vena cava, returning the same kind of blood tromthe lower parts of (be body. n, the right auricle of the heart, where both veins meet. />, and x, veins from the liver, spleen and bowels, uniting with theinferior cava. The auricle being filled, contracts and forces the blood into 0, theventricle: next the ventricle contracts and sends it into k
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Keywords: ., bookcentury1800, bookdecade1830, booksubjectanatomy, bookyear1834
