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Elementary exercises in physiology . have norelation to broken down blood elements or debris. A strictly proteindiet or a strictly carbohydrate diet contributes nothing to thepresence of the chylomicrons in the blood, but a fat diet causes avery marked increase in their number. After fat absorption hasoccurred the greatly increased number of chylomicrons becomesmarkedly reduced in the course of a few hours. 69 PART II Experimental Physiology XVI DISSECTION OF FROGS HEART, VAGUS AND SCIATICNERVES AND LEG MUSCLES Each dissection is to be carefully demonstrated to one of theinstructors before beg

Elementary exercises in physiology . have norelation to broken down blood elements or debris. A strictly proteindiet or a strictly carbohydrate diet contributes nothing to thepresence of the chylomicrons in the blood, but a fat diet causes avery marked increase in their number. After fat absorption hasoccurred the greatly increased number of chylomicrons becomesmarkedly reduced in the course of a few hours. 69 PART II Experimental Physiology XVI DISSECTION OF FROGS HEART, VAGUS AND SCIATICNERVES AND LEG MUSCLES Each dissection is to be carefully demonstrated to one of theinstructors before beg Stock Photo
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The Reading Room / Alamy Stock Photo

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2AM4W27

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1295 x 1929 px | 21.9 x 32.7 cm | 8.6 x 12.9 inches | 150dpi

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Elementary exercises in physiology . have norelation to broken down blood elements or debris. A strictly proteindiet or a strictly carbohydrate diet contributes nothing to thepresence of the chylomicrons in the blood, but a fat diet causes avery marked increase in their number. After fat absorption hasoccurred the greatly increased number of chylomicrons becomesmarkedly reduced in the course of a few hours. 69 PART II Experimental Physiology XVI DISSECTION OF FROGS HEART, VAGUS AND SCIATICNERVES AND LEG MUSCLES Each dissection is to be carefully demonstrated to one of theinstructors before beginning the dissection of a new part. 240. Dissection of Progs Heart. With a pair of strongscissors and forceps cut through the pectoral girdle. Remove thesternum and expose the heart, cut carefully through the pericardiumand note the division of the heart into ventricle, auricles, andtruncus arteriosus. (Do not remove the heart until the vagus nervehas been dissected). CaviTy o| TightA uricie;> vail Truneus ?% OLrTtritiui Valve. 0 f>P W IT) j oV Sinus venoS*.Caviry o( U^t-au Title.. valve. ..Cay) Ty 9ytnjrtele. Fig. 3. Dissection of the frogs heart showing the relationship of the cav-ities and the principal blood vessels. Raise the apex of the ventricle slightly and note a delicate bandof connective tissue binding the ventricle to the body, (the frenum).The ventricle is of a conical shape and is usually of a palfer colorthan the auricles. It bas thick walls. The auricles are two in number although externally the divisionis not easily appa, rent. The ri^ht is larger than the left and bothare usually engorged with blood. The walls of the auricles are thin. 71 The truncus arteriosus is a cylindrical tube somewliat swollen asit lies upon the auricles. The truncus soon divides into two arches, one passing to the right, the otJlier to the left. Eaoh arch soon splitsinto three vessels, the carotid, for the head, the pulmocutaneous, carrying the venous blood to the lungs and skin t

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