The essentials of healthA text-book of anatomy, physiology, hygiene, alcohol, and narcotics . tricles. Each side of theheart, therefore, consists of an auricle above and a ven-tricle below. The ventricles have no communicationwith each other, neither have the auricles; but eachauricle has an opening into its own ventricle, protectedby valves. All these cavities are lined by a very smoothm e mb r a n e. The col-ored plate is drawn fromthe same specimen asFig. 30. It representsthe right side of theheart as filled with thedark (blue) venousblood, and the left sidefilled with the bright(red) arter
The essentials of healthA text-book of anatomy, physiology, hygiene, alcohol, and narcotics . tricles. Each side of theheart, therefore, consists of an auricle above and a ven-tricle below. The ventricles have no communicationwith each other, neither have the auricles; but eachauricle has an opening into its own ventricle, protectedby valves. All these cavities are lined by a very smoothm e mb r a n e. The col-ored plate is drawn fromthe same specimen asFig. 30. It representsthe right side of theheart as filled with thedark (blue) venousblood, and the left sidefilled with the bright(red) arterial blood. A study of Fig. 30 willaid to a better under-standing of the abovefacts. The right side ofthe heart is representedat 3 and 4, while 6 and7 represent the left wall between thetwo is directly beneaththe small blood vesselshown on the outsideof the heart, to the leftof the number 7. Several blood vessels course overthe heart, giving its muscular tissue proper nourish-ment. A careful study of each side of this organ willshow that the right side is divided into two parts by. Fig. 30. The heart and the largervessels at its base or upper part:(l)and (2) veins; (3) right auricle;(4) right ventricle ; (5) pulmonary ar-tery ; (6) left auricle ; (7) left ven-tricle ; (8) aorta. 106 THE ESSENTIALS OF HEALTH. a cross partition. These parts are represented by thenumbers 3 and 4, the former being the right auricle, andthe latter the right ventricle. The large vessels, 1 and2, go to the right auricle, and one large vessel, 5, pro-ceeds from the base of the right ventricle. The left sideof the heart is partly hidden from view, still the num-bers 6 and 7 show the corresponding left auricle andventricle. Coming from the left ventricle is the largestartery in the body, 8, the aorta. The vessels enteringthe left auricle are hidden from view, but they are rep-resented in the following diagram. Fig. 30 is a fairlycorrect anatomical representation of the heart, with therelative siz
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectphysiology, bookyear1
