. The new medical world. A book for reference and consultation, containing a thorough description of disease, with the latest and best methods for its treatment . ronger thanthose of the right owing to the greater force required to send thearterial blood thorougdiout the body. Each side of the heart is 356 THE NEW MEDICAL WORLD. further divided into apartments, an auricle and a ventricle, fourcavities in all, two auricles and two ventricles. The necessity forthis arrangement can be seen when we come to understand thecirculation. The heart muscle receives its nourishment from two small arteries
. The new medical world. A book for reference and consultation, containing a thorough description of disease, with the latest and best methods for its treatment . ronger thanthose of the right owing to the greater force required to send thearterial blood thorougdiout the body. Each side of the heart is 356 THE NEW MEDICAL WORLD. further divided into apartments, an auricle and a ventricle, fourcavities in all, two auricles and two ventricles. The necessity forthis arrangement can be seen when we come to understand thecirculation. The heart muscle receives its nourishment from two small arteries,the right and left coronary, the first branches of the aorta just out-side of the semilunar valve. Its nerve supply is abundant from thesympathetic and cerebro-spinal system. The valves of the heart are an ingenious arrangement permittingthe blood to flow freely only in the direction in which it ought to go,and by closing at the right instant they prevent the blood from flow-ing in the wrong direction. If from any reason the valves of theheart do not close tightly, a portion of the blood flows back after eachstroke, a condition common in valvular The heart with the right auricle and right ventricle laid open to show the interiorstructure The valves between the left auricle and the left venticle are knownas mitral; the valves which guard the outlet of the left ventricleare known as the semilunar. The mitral and semilunar valvesof the left side are much more liable to be disabled and suffer from THE NEW MEDICAL WOKLD. 357 disease than the valves of the right heart, because the left ventricle islarger and stronger than the right and contracts with greater these valves are subjected to a powerful and constant valves of the right heart are the tricuspid and tricuspid guard the opening between the right auricle and theright ventricle, and the semilunar guard the opening of the pulmonaryartery. The left ventricle is obliged to contract w
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectmedicinepopular
