A text-book of physiology for medical students and physicians . ement as to what constitutesthe heart-level, since the highest and lowest points of the heartwhen the individual is standing or sitting may differ by as muchas 15 centimeters, von Recklinghausen proposes the levelmade by a dorsoventral line drawn from the bottom of thesternum (costal angle) to the spinal column. This authorf hasdevised a simple apparatus for determining venous and capillarypressures, the principle of which is shown by the schema repre-sented in Fig. 206. * Muench. mediz. Wochenschrift, 1903, 1904. fVon Recklinghau
A text-book of physiology for medical students and physicians . ement as to what constitutesthe heart-level, since the highest and lowest points of the heartwhen the individual is standing or sitting may differ by as muchas 15 centimeters, von Recklinghausen proposes the levelmade by a dorsoventral line drawn from the bottom of thesternum (costal angle) to the spinal column. This authorf hasdevised a simple apparatus for determining venous and capillarypressures, the principle of which is shown by the schema repre-sented in Fig. 206. * Muench. mediz. Wochenschrift, 1903, 1904. fVon Recklinghausen, Archiv f. exper. Pathol, u. Pharmakol, 55, 470,1906. 32 498 CIRCUATION OF BLOOD AND LYMPH. A circular bag of thin rubber with a diameter of about 5§ cm. is providedwith a central opening of 2 cm. The bag is connected with a pump so thatit can be blown up, and the degree of pressure exerted is measured by anattached manometer. This bag, moistened with glycerine, is laid upon avein, as represented in the diagram. It is covered by a glass plate held firmly. Fig. 207.—Apparatus for determining venous blood-pressure in man: B, The box?with glass top for putting pressure on the vein; the details are shown in the small figure(Fig. 2), in which 1 show- the alumimum box; 2, the brass collar which fits over 1 andholds in place the perforated sheet of rubber dam; 3, which forms the bottom of the boxand is forced down on the vein. E, pressure bulb for increasing pressure in the box untilthe vein is obliterated. G, water manometer to measure the pressure. (Eyster andHooker.) in position and the bag is then blown up until the vein disappears; the pressureat which this happens is shown by the manometer and marks the pressurewithin the vein. A convenient modification of this apparatus which hasbeen described by Eyster and Hooker* is shown in Fig. 207. The box, B,used for compressing the vein is connected by rubber tubing with a rubbermanometer, G, and a pressure-bulb, E. The structure
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Keywords: ., bookautho, bookcentury1900, bookdecade1910, booksubjectphysiology
