Elementary text-book of anatomy / by Henry Edward Clark.

  • Clark, Henry E. (Henry Edward), 1845-1909
Date:
1895
Catalogue details

Licence: Public Domain Mark

Credit: Elementary text-book of anatomy / by Henry Edward Clark. Source: Wellcome Collection.

    16/314 (page 12)
    between the constituents of fluid blood and coagulated blood is shown in the following table:— Liquid blood I Corpuscles Liq. sanguinis . . 1 Fibrin / Clot Coagulated blood. ^ Serum .r The blood corpuscles are of two kinds, red and white, the proportion of the two being on an average 1 white to 500 red. A cubic millimetre of healthy blood contains 5,000,000 red corpuscles and 10,000 white corpuscles. The red corpuscles are circular biconcave discs, measuring al)out width and thickness, and l)eing devoid of a nucleus. The white corpuscles are larger than the red ones, and measure about inch. When at rest they are spherical, and have a granular appearance, but they have the povmr of changing their shape, and of moving from place to place by putting out pro- cesses of their substance. They are transparent masses of protoplasm, each with one or more nuclei, and have no cell-wall. Other smaller corpuscles have in recent years been described; /.V mw*- i u it 4a Fig. 4.—White Blood Corpuscle. Its successive changes of shape. [Klein.] they are called hcemcitoblctsts or hlood-^latelets, but little is known of their nature or uses. The liquor sanguinis or fluid of the blood is composed of the serum and of two factors which by their union form fibrin. Serum consists of the salts of the blood, fatty matter, jil- bumen, water, gases, and sugar. The gases of the blood are the following:—Oxygen, for the most part carried by the red corpuscles; carbonic acid, in com-