File:Kirkes' handbook of physiology (1907) (14583129488).jpg

Identifier: kirkeshandbookof00kirk (find matches)
Title: Kirkes' handbook of physiology
Year: 1907 (1900s)
Authors: Kirkes, William Senhouse, 1823-1864 Greene, Charles Wilson, 1866-1947
Subjects: Physiology
Publisher: New York, W. Wood and company
Contributing Library: Columbia University Libraries
Digitizing Sponsor: Open Knowledge Commons

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ise to the normal.The usual fall is 250,000 to 750,000 per cubic millimeter. These resultsare most marked after a largely fluid meal, and are probably due to dilutionof the blood as a result of the absorption of fluids. In animals the numberof red cells is increased by fasting, but in man the results are variable, someauthorities claiming an increase and others a decrease. In childhood there RED CORPUSCLES OR ERYTHROCYTES 109 is no difference between the sexes in the number of red cells per cubic milli-meter, but after menstruation is established a relative anemia develops inwomen. YVelckers original estimate placed the difference at 500,000 percubic millimeter, and these figures have been generally accepted, thoughLeichtenstein asserts that the difference is 1,000,000. Menstruation in healthy subjects has practically no effect, as not morethan ico-200 cubic centimeters of blood are lost normally in the course of MAMMALS. - IAN I WHALE I ELEPHANT MOUSE HORSE MUSK DEER CAMEL rur m irwn
Text Appearing After Image:
Fio. in.—The Illustration is Somewhat Altered from a Drawing by Gulliver, in theProceed. Zool. Society, and exhibits the typical characters of the red blood-cells in the mainDivisions of the Vertebrata. The fractions are those of an inch, and represent the average diameter.In the case of the oval cells, only the long diameter is here given. It is remarkable, that althoughthe size of the red blood-ceils varies so much in the different classes of the vertebrate kingdom,that of the white corpuscles remains comparatively uriform, and thus they are, in some animals,much greater, in others much less, than the red corpuscle existing side by side with them. several days. Under such circumstances the normal diminution of red cellsper cubic millimeter is probably less than 150,000, though Sfameni has placedthe loss at about 225,000. In fact an increase has been claimed. Theleucocytes are slightly increased during menstruation. It is now the generalopinion that pregnancy has little or no effec

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